Professional Electrician & Installer March 2020

001_PE_MAR20 06/02/2020 13:38 Page 1

TO EE FR DE RA ET TH

PROFESSIONAL

ELECTRICIAN THE BUSINESS MAGAZINE FOR THE ELECTRICAL TRADE

& INSTALLER

MARCH 2020

HEALTH & SAFETY WHY IT’S VITAL TO ISOLATE LIVE CIRCUITS WHEN YOU’RE WORKING

NEWS SPECIAL

MANDATORY ELECTRICAL CHECKS IN THE PRS ARE ON THEIR WAY

ALSO IN THIS ISSUE: TECHNICAL & TRAINING ● CAUGHT ON CAMERA ● NEW PRODUCTS ● GIVEAWAYS AND MORE…..

PE Page Grid_Layout 1 04/02/2020 10:05 Page 1

003_PE_MAR20_Layout 1 06/02/2020 10:10 Page 3

Total Average Net Distribution: 71,632 Certification period 1 January 2018 - 31 December 2018

March 2020 Volume 36 No.3

Regulars 5

VIEWPOINT

11

NEWS

55

23 MK ELECTRIC INSIGHTS NEW 24 ELEX MANCHESTER PREVIEW 28 THE CODEBREAKERS 48 MADE 2 MEASURE 70 PRODUCTS IN PRACTICE 88 CAPTAIN C-TEC

Technical & Training 31 Protective Multiple Earthing (PME): what are the operating characteristics?

34 A look at the ‘ins’ and ‘outs’ of AFDD technology

37 What you need to know about testing of EV charging points

39 Temporary solutions for electrical installations

42 Heat recovery: are you using the 40/70 rule?

45 Commercial surge protection: what

Why lighting controls are helping to reimagine retail outlets

Products & Business Solutions

37

52 Why safe isolation should never be an after-thought when you’re working on live circuits

to consider

55 Can innovative lighting controls help We review the IDEAL SureTrace tool

to reimagine retail?

59 Has it ever been easier to get into

How to test EV charging points

audio installations?

64 The dangers of Electric Arc burns and how to utilise protective clothing in your work

Digital Digest 89 How do you know which Apps to trust?

67 Learn how to install electrics faster – step-by-step

93 Profiling the latest App and website developments

68 Tackling the three major challenges electricians face with LED installations

72 Pete Monfort reviews the IDEAL Industries EMEA SureTrace Circuit Tracer

72

75 Rounding-up the latest new products and additions to the electrical market

97 An extra helping of Caught on Camera from PE’s social channels

Competitions & Giveaways 27 WIN A pair of C.K Automatic Wire Strippers could be yours

81 WIN 10 Hultafors Tools Snap-Off Knives to be won

PROFESSIONAL ELECTRICIAN March 2020 3

PE Page Grid_Layout 1 30/01/2020 09:07 Page 1

005_PE_MAR20_Layout 1 06/02/2020 10:14 Page 5

@proelectrician

professionalelectrician

Editorial Assistant PATRICK SWAN email: pswan@hamerville.co.uk Digital Manager RUTH WILLIAMS email: rwilliams@hamerville.co.uk Digital Assistant REBECCA MCGEOCH Advertisement Manager ANTHONY SCOTT email: ascott@hamerville.co.uk Assistant Advertisement Manager IAN TURNER Design ADEEL QADRI Production Assistant KERRI SMITH Group Production Manager CAROL PADGETT Distribution Manager KARL CLARK Managing Editor TERRY SMITH Publisher BRYAN SHANNON Printed by: WALSTEAD PETERBOROUGH Published by: HAMERVILLE MEDIA GROUP Regal House, Regal Way, Watford, Herts, WD24 4YF Tel: 01923 237799 Fax: 01923 246901 Email: pe@hamerville.co.uk PROFESSIONAL ELECTRICIAN is the business journal for the electrical contracting industry. It is available to the trade at leading electrical wholesalers throughout the UK. © 2020

Subscriptions to PROFESSIONAL ELECTRICIAN are available. Please contact us for rates.

Image References (Adobe Stock): Pg 17 Landlord law © Designer491 Pg 18 Electrics check © New Africa Pg 20 Electric car © IViewfinder Pg 34 Frayed cable © Katsiuryna Pg 37 EV station © Num Pg 39 Temporary solution © IQConcept Pg 42 Can’t sleep © Pololia Pg 45 Lightning surge © Libor Pg 64 Skin burns © Allila Medical Pg 65 Hand burn © Alho007 Pg 65 Blister © Szymon Pg 68 Plug-in lights © Chris Titze Pg 86 Confused electrician © Auremar

Professional Electrician, Regal House, Regal Way, Watford, Herts, WD24 4YF

Editor’s Viewpoint

Meet the team Editor RICHARD BOWLER email: pe@hamerville.co.uk

pe@hamerville.co.uk

Saying ‘yes’ to the PRS will be a Governmental success

A

week, they say, is a long time in politics, but it’s surely got nothing on the world of trade magazine publishing! In what seems like the blink of an eye since we sat down to pen our last Viewpoint column, we have now ‘officially’ left the EU after article 50 was evoked.

For this to happen, of course, we’ve had to go through a truly historic General Election, the results of which could possibly change the political landscape of the UK forever, with the demise of two unceremoniously usurped opposition leaders and all of the subsequent navel gazing and infighting which invariably proceeds such a profound public rejection of policies.

The end result is that after three and a half years of chaos and confusion (a large portion of) the nation has heaved a collective sigh of relief. And now, perhaps, with such a convincing mandate to govern we can all move on, finally lying to rest the ghost of Brexit past and address some of the more pressing issues to do with the UK economy and the policies that run our country.

And to this end, the Prime Minister and his new cabinet will not be lacking in sage advice over the coming months, as a whole raft of organisations and associations will be putting forward the vested interests of their members. We know from past experience that the honeymoon period, even with such a strong majority, never lasts long in the corridors of power.

Our own electrical industry is already starting to see the reverberations of the new Governmental changes, following news that electrical inspections will become mandatory in the Private Rented Sector (PRS). Although the lobbying process for this potentially landmark regulation started a long time before the current incumbents at No.10 were appointed, it

is nonetheless encouraging that Government has seen fit to push the legislation through during 2020.

As it currently stands the detailed draft legislation is now subject to parliamentary approval, with the regulations proposing that from 1st July this year all new private tenancies in England will need to ensure that electrical installations are inspected and tested by a qualified person prior to the start of a new tenancy. The landlord will then be required to ensure that the installation is inspected and tested at least every five years and more regularly if the most recent safety report requires it.

For existing tenancies, an electrical safety test will need to be carried out by 1st April 2021, with regular tests in accordance with the new regulations, which will apply to all properties across the PRS. A breach of the regulations could see heavy financial punishments handed out to landlords.

Whichever way you look at things, the proposed legislation – if it is passed – can only be a good thing for both the PRS and the electrical industry. The benefits for tenants, who are renting a property in good faith that its electrics are compliant and safe, are obvious, while landlords who may have previously resisted the expenditure required to ensure their properties are regularly inspected and properly maintained for tenants, can take comfort from the peace of mind that any electrical faults or issues can be identified long before they become a potential hazard for occupiers.

For the electrical industry, it offers the opportunity for more work and for contactors and installers to build strong ongoing maintenance relationships with landlords moving forwards – a win, win scenario for all involved.

Have a good March and we’ll see some of you at ELEX Event City later this month,

Richard B owler PROFESSIONAL ELECTRICIAN March 2020 5

006_PE_MAR20_Layout 1 06/02/2020 14:43 Page 98

RDR.LINK

WWW. RDR.LINK: how to use pe’s ENQUIRY SERVICE

Never ones to rest on our laurels, we've updated our reader enquiry service to help you to get to the product, business or technical information you require, quickly and efficiently.

LOST YOUR BACK ISSUE OF PE? FEAR NOT! Introduced on the PROFESSIONAL back of long-term ELECTRICIAN & INSTALLER public demand, LIGHTING FOCUS and ensuring that TECHNICAL & there's no need to TRAINING panic if you've misplaced a recent issue, you can now access a digital copy of your favourite magazine directly from our website. All you need to do is click on the 'Magazine' tab on our website, and you can view the past month's issue in digital format, complete with clickable links to take you to further information about products and articles you're interested in.

Don't forget to also sign up for our FREE weekly e-newsletter while you're there, delivering the latest stories from www.professional-electrician.com directly to your inbox every week.

TO

E AD E TR TH

6 March 2020 PROFESSIONAL ELECTRICIAN

How to use rdr.link On certain pages you may read: “To download a technical data sheet for this product, visit: www.rdr.link/EN001” (or similar).

Simply enter www.rdr.link/ with the unique 5 digit code into a browser and it will take you directly to the mentioned resource – in this case the product data sheet.

Alternatively, you can log directly on to www.rdr.link and type in any of the codes from the magazine into the main search box. You’ll then be directed to the supporting content or resource that you’re looking for.

There's a tremendous array of online supporting aids out there for electricians, so our aim is to help to point you in the direction of the best ones without making you do the thinking yourselves.

To that end we hope the new system will prove popular.

But don’t just take our word for it; give it a try for yourself this month!

EE FR

What is rdr.link?

With a wide array of online resources supporting the latest solutions – from videos to technical guides, PDFs to podcasts – it can be a challenge to locate what you need quickly and efficiently.

To ensure you don’t miss out on those valuable resources, we’ve introduced rdr.link – a new, rapid service to transport you immediately to the online resources mentioned in our stories.

Replacing our traditional paper ‘Readerlink’ enquiry card, all readers have to do is type the call-to-action codes located on each page into their web browser and they’ll be taken directly to useful online content – whether that be supporting videos, further product information, white papers, technical downloads and more.

It’s a simple, direct route to the relevant information online, as an alternative to searching around and trying to find out more via a search engine.

THE BUSINESS MAGAZINE FOR

THE ELECTRICAL TRADE

FEBRUARY 2020

WHY OVIA IS HELPING INSTALLERS TO SEE

THE LIGHT

WHAT DOES THE FIRST AMENDMENT MEAN FOR EV INSTALLATIONS?

ALSO IN THIS ISSUE: NEWS & VIEWS

● CAUGHT ON CAMERA ● NEW PRODUCTS

● GIVEAWAYS AND MORE…

PE Page Grid_Layout 1 30/04/2019 11:39 Page 1

PE Page Grid_Layout 1 30/01/2020 09:13 Page 1

PE Page Grid_Layout 1 30/01/2020 09:13 Page 2

PE Page Grid_Layout 1 03/02/2020 10:13 Page 1

011_PE_MAR20_Layout 1 06/02/2020 10:27 Page 11

news @proelectrician

For the latest electrical news visit www.professional-electrician.com

professionalelectrician

pe@hamerville.co.uk

Professional Electrician, Regal House, Regal Way, Watford, Herts, WD24 4YF

ECS Check now available in N. Ireland The Electrotechnical Certification Scheme’s ECS Check system is now operational and approved as a pilot that meets the Licence to Practise (LtP) requirements on Government public sector construction contracts in Northern Ireland.

ECS Check is recognised by the Northern Ireland Government as meeting procurement guidance note 01-16 and electrical contractors can now meet their LtP requirements free of charge.

The ECS Check system also offers value-added benefits to help improve visibility and productivity.

ECS Check will quickly display details of qualified electricians, other electrical workers and apprentices employed on multiple projects. Employees who don’t hold an ECS card can easily apply online or employers can use the ECS Employer Portal system to manage the ECS cards of employees.

To use ECS Check, all the user needs to do is make a request to the main contractor or project originator that ECS Check is used to comply with the LtP requirement under PNG 01-16. If the user is already using the Employer Portal, this function will be added to their account.

ECS Check offers a number of value-added benefits, including: free access, an easy to use e-portal, visibility of workforce employed on-site, multi-site visibility, a single portal to access all projects in Northern Ireland, England and Wales, a smartphone App enabled for real-time on-site auditing, and the ability to verify/validate ECS Cards issued by the JIB. FIND OUT MORE ABOUT ECS CHECK AT: WWW.RDR.LINK/EN001

‘Overnight Tools’ cover launched Direct Line for Business has launched expanded coverage options for its tradesperson insurance.

The ‘Overnight Tools’ cover option, which insures customers’ tools overnight when kept in a locked vehicle, will be invaluable for tradespeople who are often working at a client’s site and don’t have access to a locked building for storing tools overnight. Other new cover options include third party damage for cleaners and legal expenses.

Direct Line for Business has also migrated its tradesperson insurance to an enhanced online sales platform. The system is designed to give power back to the customer and allows them to build a customised policy tailored to their specific insurance needs, with all the benefits of purchasing direct rather than through a broker. It also means that policyholders will only pay for the insurance that they need.

GET MORE DETAILS AT: WWW.RDR.LINK/EN002

PE competition winners announced Even more PE readers have received good news this month after being selected as prize winners in a number of the magazine’s recent competitions.

Andy James of AMJ Electrical from Sheffield has plenty of fun in store after bagging an exclusive red letter day voucher, courtesy of OVIA. Elsewhere, Dave O’Connell of Prima Construction was the lucky recipient of a £200 Amazon voucher, thanks to ABB. We have more competition prizes up for grabs this month (see pages 27 and 81 for more details), so make sure you get your entries in. You could see your name on these pages in a future issue.

ACCESS AND ENTER ALL OF PE’S PRIZE DRAWS AND GIVEAWAYS AT: WWW.RDR.LINK/EN003

PROFESSIONAL ELECTRICIAN March 2020 11

011_PE_MAR20_Layout 1 06/02/2020 10:29 Page 12

news

For the latest electrical news visit www.professional-electrician.com

Can you inspire, educate and inform?

The electrical industry is being called upon to share knowledge, insights and the reality of roles across the sector to inspire the next generation, in a new campaign from The Electrotechnical Skills Partnership (TESP).

Under the launch banner of ‘Light Up Their Imaginations’, the campaign will feature a series of messages aimed at electricians and electrical contracting firms, to encourage them to get on board with a wide choice of activities to promote electrical careers through face-to-face involvement with schools and colleges.

Ranging from simply giving an hour for a careers talk, mentoring or workplace visits, to setting work-based projects and supporting careers events, the opportunities to get involved are varied and can fit around the time that can be spared.

From apprentice electricians to business owners and all roles in between, the campaign is seeking people across all sizes and types of organisation, to highlight the variety of occupations available and the diverse progression that can be achieved once an electrical apprenticeship is completed.

In addition to inspiring students making career choices and supporting those already working towards an electrical career, TESP is also asking electricians to consider helping to teach and assess apprentices, as this will aid the assessor and tutor shortage also affecting the industry.

GET MORE DETAILS AT: WWW.RDR.LINK/EN004

011_PE_MAR20_Layout 1 06/02/2020 10:30 Page 13

@proelectrician

professionalelectrician

pe@hamerville.co.uk

Professional Electrician, Regal House, Regal Way, Watford, Herts, WD24 4YF

Schneider embraces Notts University challenge Schneider Electric is helping to power the University of Nottingham and optimise every operation through the use of the brand’s EcoStruxure Building solution.

The system plays a pivotal role in reducing energy consumption and expenditure, while also enabling departments to drive greater cost savings through a better understanding of energy through a single platform. As a result, the University is seeing a 5% reduction to energy consumption and a 3% reduction on overall energy costs in areas where EcoStruxure has been deployed.

The inherent usability and transparency of the new system has also driven other operational savings. Maintenance costs have been reduced by 25%, while workplace safety and comfort costs have also dropped by 25%.

The greatest benefits, however, are best seen outside of pure operational efficiency. In line with the University’s goal to slash its CO2 footprint, the Schneider Electric EcoStruxure solution has enabled it to improve its control of renewable technology by 75% and drastically reduce emissions. Occupant comfort has also been vastly upgraded – overall control of the building is up 70%, while temperature control is at 50%.

Overall, with all the improvements made to the system the project will have effectively paid for itself within a staggering 7-10 years.

Andy Nolan, Sustainability Director at the University of Nottingham, said: “The EcoStruxure architecture has helped us revolutionise how we manage the estate. It has improved every aspect of operations, from on-site energy efficiency and cyber security to comfort optimisation. We are already looking to expand our usage into EcoStruxure Building Advisor.”

011_PE_MAR20_Layout 1 06/02/2020 10:31 Page 14

news @proelectrician

For the latest electrical news visit www.professional-electrician.com

professionalelectrician

pe@hamerville.co.uk

Professional Electrician, Regal House, Regal Way, Watford, Herts, WD24 4YF

IDEAL Industries supports future electrical skills IDEAL Industries has developed a partnership with Warrington & Vale Royal College as part of a planned outreach programme with the further education sector across the UK. Keen to invest in helping to embed a culture of best practice, safety and installation consistency in the next generation of electrical sector professionals, IDEAL Industries EMEA has donated a large supply of its In-Sure Push-In and Lever Wire Connectors to Warrington & Vale Royal College.

The connectors will enable students to train and take exams with this simple-to-use, faster and more consistent alternative to connector strips. The college will also benefit from a number of safe isolation kits and testing equipment donated by the company.

Product donations are just part of IDEAL’s college outreach programme, however; the company’s team will also

provide a series or talks and demonstrations for students and engagement with both students and staff will feed in to the new product development programme.

Brett Smyth, General Manager for the UK and Europe, explains: “We’re keen to work with young electricians and their teachers to close the gap between education and the workplace and ensure we help them meet the challenges of the profession – both now and in the future.

“As a Warrington-based company, this initiative enables us support our local community but it will also form part of a 14 March 2020 PROFESSIONAL ELECTRICIAN

wider knowledge sharing programme with the further education sector. We see it as a way of both encouraging best practice amongst future electrical professionals and building on a tradition of innovation at IDEAL Industries.”

As part of the partnership, Warrington & Vale Royal College’s electrical teaching team will provide technical consultancy to Ideal Industries and the partners will work together on a proposed skills competition.

Dave Love, Curriculum and Apprentice Manager at Warrington & Vale Royal College, adds: “We often struggle to fund new equipment to enable our students to practice installation skills and learn the

latest techniques.

“Thanks to IDEAL Industries’ generosity, our students will have access to resources that will help them learn how to make faster connections and safer isolations; important skills that will stand them in good stead for their future careers.

“As a college, we welcome any opportunity to engage with commercial businesses, particularly if (like this partnership) it benefits our students.”

DOWNLOAD THE IDEAL INDUSTRIES EMEA FULL LINE CATALOGUE AT: WWW.RDR.LINK/EN005

PE Page Grid_Layout 1 04/02/2020 10:19 Page 1

PE Page Grid_Layout 1 06/02/2020 09:45 Page 1

017_PE_MAR20_Layout 1 06/02/2020 10:37 Page 17

NEWS SPECIAL

GOVERNMENT ANNOUNCES ELECTRICAL CHECKS FOR PRS

Following the announcement that Government plans to introduce mandatory electrical installation inspections for all homes in the private rented sector, we look at the devil behind the detail and get reaction from around the industry.

W

ith the Government producing draft legislation requiring mandatory five-year electrical installation inspections for the private rented sector, many in the industry who have been campaigning for such a change can breathe a sigh of relief. The detailed draft legislation, which is now subject to parliamentary approval, proposes a number of changes for private landlords and aims to improve the safety of tenants.

The draft regulations propose that from 1st July 2020 all new private tenancies in England will need to ensure that electrical installations are inspected and tested by a qualified person prior to the start of a new tenancy. The landlord will then be

required to ensure that the installation is inspected and tested at least every five years and more regularly if the most recent safety report requires it.

For existing tenancies, an electrical safety test will need to be carried out by 1st April 2021, with regular tests in accordance with the new regulations, which will apply to all properties across the PRS. A breach of the regulations could see landlords fined up to £30,000.

The date for implementation of the regulation will see England aligned with Scotland, where mandatory electrical safety checks are already in place.

Industry leaders who have long campaigned for mandatory checks have widely welcomed the changes to electrical safety.

Mike Smith, Technical Director of the ECA, says: “ECA has long been working with its industry partners to raise safety standards in the PRS and we will now work with our members – and the wider industry – to help ensure that the electrical safety of all PRS properties get the professional attention they need.

“The dangers posed by electricity need to be taken seriously and they should be properly managed. It’s vitally important that landlords have the information they need to fully understand and carry out their new legal obligations.”

More than half of accidental domestic fires in the UK are caused by electricity, according to figures by Electrical Safety First. The charity hopes the new regulation will not only protect millions of

PROFESSIONAL ELECTRICIAN March 2020 17

017_PE_MAR20_Layout 1 06/02/2020 10:37 Page 18

NEWS SPECIAL

renters in England from the risks posed by unsafe electrics but also go some way into reducing electrical fires in the future.

Last year, the inquest into the death of Professor John Alliston prompted a Prevention of Future Deaths report to the Government, stating that action was needed to prevent deaths caused by electrical faults in rented properties in England in the future.

A separate inquest in 2009 heard how a mother of one, Thirza Whittal, was killed instantly after being electrocuted from the taps when running a bath after a series of electrical faults caused the taps to become live.

Martyn Allen, Technical Director at Electrical Safety First, believes the imminent introduction of mandatory electrical safety checks in the PRS will go a long way in preventing tragedies of this kind. “We’ve heard harrowing tales of fatal accidents caused by unsafe electrics in rented properties. This new regulation – which we believe will benefit tenants and landlords by protecting both people and property – will help ensure such tragedies don’t happen again. Tenants will finally be able to hold landlords to account for the safety of electrics in their rented homes.”

18 March 2020 PROFESSIONAL ELECTRICIAN

While the majority of landlords already take suitable measures to ensure their properties are safe, this new law will hold those that fail to do so to account.

More than this, the new regulation will allow landlords to protect their property as well as their tenants, as Martyn explains: “[…] while most landlords already ensure their properties are safe, this new law offers clarity and helps private landlords protect their assets through regular upkeep of the electrics in their properties.”

A huge success These views have been echoed by the industry’s prominent CPS providers, with Frank Bertie, Chairman of the NAPIT Trade Association, stating: “NAPIT views this as a huge success for our industry.

We’ve spent a considerable amount of time campaigning to raise electrical safety standards in the private rented sector with over 41% of our members finding more serious electrical hazards in privately rented homes than in any other form of tenure.

“The news that private landlords will be required to ensure their properties are subject to electrical inspection and testing

by a qualified person at intervals not exceeding five years is most welcome.”

John O’Neill, Technical Director at NICEIC & ELECSA, adds: “I’m pleased that the new Government has taken action in this important area.

“We look forward to working with landlords to ensure they understand the benefits of using registered electrical contractors to undertake the testing and inspections that will be vital to keep tenants safe. We remain committed to working with industry partners and other stakeholders, to raise standards both in the PRS and across the industry generally.”

Sean Miller, Electrician Programme Manager at Schneider Electric, is another to welcome the initiative, stating: “We’re delighted that the Government is taking action in this vital area. Any move that increases safety in homes must be seen as positive.

“The announcement also represents an opportunity for electricians to get more work and grow their skills. Moving forward, we expect to see more electricians securing long running contracts with landlords, across multiple properties to meet the ongoing demand.”

PE Page Grid_Layout 1 30/01/2020 09:30 Page 1

020_PE_MAR20_Layout 1 06/02/2020 10:39 Page 20

NEWS SPECIAL

AMENDMENT 1 OFFICIALLY RELEASED

Amendment 1 to BS 7671:2018 has been published as a standalone, free to view version on Section 722 (electric vehicle charging installations only).

A

nnounced in the latter half of 2019, the update enables a more practical solution for Electric Vehicle Charging Installations and follows advances in technology that were unavailable when BS 7671:2018 was first published.

It will also assist the industry to support the Government’s target of at least 50% of new car sales to be ultra-low emission by 2030, enabling the installation of charging points to be easier and quicker, while reducing the cost of installations to both installers and consumers. Changes made to Section 722 include: Protection against electric shock Regulation 722.411.4.1 concerning the use of protective multiple earthing (PME)

supply has been redrafted.

The new and amended requirements around PME are intended to keep pace with technology, while increasing the ability for an installer to use PME on EV charging equipment installations.

This means that more charging points can be installed, helping the rollout of EV infrastructure across the country.

In addition to changes to the existing information, two new indents are included: (iv) to cover a single-phase installation, and (v) to allow the use of an alternative device to those in (iii) or (iv) which does not result in a lesser degree of safety than using (iii) or (iv).

Regulation 722.411.4.1 does not allow PME to be used to supply an EV charging point

unless one of the methods described in (i), (ii), (iii), (iv) or (v) of 722.411.4.1 are used.

Mark Coles, Head of Technical Regulations at the IET, explained: “Technical committees have been able to address a new opportunity for electric vehicle charging installations that provides a practical solution benefiting industry, consumers and Government alike.

“This update to the IET Wiring Regulations puts the electrical industry at the forefront of driving technological innovation to ensure the installation of practical, safe charging points that are accessible to all.”

VIEW A FREE VERSION OF THE AMENDMENT AT: WWW.RDR.LINK/EN006

GET EXPERT CPD FROM NAPIT

T

o help installers better understand the requirements, NAPIT’s technical experts will be covering a free CPD session on EV Charging Amendment 1 at the NAPIT EXPO Roadshows this year.

Providing key guidance and updates for electrical contractors nationwide at regional locations, the exclusive CPD masterclasses will cover:

EV Charging Amendment 1 An insight into the new requirements for EV charging after the release of Amendment 1. The session will also look at load management solutions and rated

20 March 2020 PROFESSIONAL ELECTRICIAN

diversity factors for protective devices to aid with EV designs.

BS 5839 Part 6 Fire Detection and Fire Alarm Systems for Buildings An update on the recent changes to BS 5839-6:2019 which sets out the latest recommendations for fire detection and fire alarm systems in both new and existing domestic premises.

18th Edition Consumer Unit Considerations A round-up of the significant changes to consumer unit design introduced in the 18th Edition.

The events are free to attend for all and visitors will receive refreshments, a CPD certificate of attendance and a goody bag.

GET DATES, VENUES AND REGISTRATION DETAILS AT: WWW.RDR.LINK/EN007

PE Page Grid_Layout 1 30/01/2020 09:28 Page 1

PE Page Grid_Layout 1 30/01/2020 09:22 Page 1

023_PE_MAR20_Layout 1 06/02/2020 15:27 Page 98

NSIGHTS GET OUTDOOR READY Spring is almost here, meaning businesses and homeowners alike will be starting to think about getting outdoors, hence it is vital for electricians to be able to offer a safe and reliable outdoor power solution. Emma Segelov, EMEA Marketing Operations Manager discusses.

Despite the unpredictable UK weather, the approaching warmer seasons mean outdoor power sources will become increasingly important for both the commercial and residential sectors. Many businesses such as restaurants, bars, event venues, and holiday parks will be preparing for outdoor activities to generate additional revenue, while many homeowners will be looking to make the most of their much-loved gardens.

Outdoor power allows businesses to offer patrons lots of different events and activities and make their existing spaces more attractive to passing trade; from outdoor seating in cafés and bars, to festivals, weddings and street food events. At the same time, homeowners can enjoy their outdoor spaces, at any time and in any weather, with patio heaters, electric BBQs, ambient lighting and much more.

Also, people are increasingly aware of the benefits that nature has for mental health, so they want to spent more time outdoors for this reason.

So, for businesses, creating relaxing outdoor spaces will hopefully create more footfall and contribute to an overall more positive customer experience, while homeowners want to create a little outdoor haven where they can de-stress.

In fact, mental health charity MIND found that one in four people in the UK will experience a mental health problem each year. Therefore, it is very pertinent that a trend set to gain momentum in

mkelectric.co.uk

2020 is the use of external and green spaces to promote good mental health – known as ‘ecotherapy’.

The ability to combine physical activity and social contact while being surrounded by nature is thought to be beneficial for our mental health.

Consequently, access to outdoor power will become increasingly important for homeowners and businesses alike – with restaurants, event venues, and holiday parks using outdoor spaces to create a calming retreat for their customers.

This presents an excellent opportunity for electricians who can offer a protective solution to deliver reliable power for outdoor activities, come rain or shine.

For instance, Masterseal Plus is IP66 rated when in use, meaning it’s dust-tight and offers total protection against high-pressure water jets.

Made from high-strength polycarbonate – a durable UV stable material which won’t crack or fade in the sunlight and is also found in the protection of motorcycle helmets – it features rear drill holes and a gasket which is fixed to the mounting frame.

This makes it quick and easy for electricians to install.

When it first launched in 1993, Masterseal was the first product of its kind on the market. Now, the range extends to more than 90 product variants, with enclosures that house products from the Logic Plus product range and colour

options of grey and white.

With products like these on the market, electricians can point businesses in the right direction, ultimately helping them to get outdoor ready, keeping customers happy and resulting in more sales.

For more information, visit: www.mkelectric.co.uk

024_PE_MAR20_Layout 1 06/02/2020 10:51 Page 24

PROFESSIONAL ELECTRICIAN

Sponsored by

ELEX2020 The Electricians’ Exhibition

FIRE UP YOUR KNOWLEDGE AT ELEX MANCHESTER

Meet special guests and take advantage of FREE CPD at ELEX

Returning to ELEX this month, FireAngel is set to debut its latest Specification range.

F

ireAngel Safety Technology, one of Europe’s leading smoke, heat and carbon monoxide suppliers, will be showcasing its innovative Specification range to trade professionals at this month’s ELEX show at Event City, Manchester.

A team of experts will be on the stand across the two days to demonstrate

FireAngel’s leading portfolio of smoke, heat and carbon monoxide alarms, whilst also providing an exclusive introduction into its latest ‘connected home’ offering.

FireAngel’s latest mains powered Specification range features a 10-year Panasonic lithium battery back-up and is the only alarm to have a proven carbon footprint measurement, producing on average 95% less carbon dioxide (CO2) than some other mains powered alarms. The Smart RF technology eliminates the time-consuming requirement

for channelling or trunking as it provides the wireless interlinking of up to 50 alarms within one network, in seconds.

James King, Business Unit Director at FireAngel, said: “We’re thrilled for our return to the ELEX exhibition. The event will be a great opportunity for us to showcase our innovative range of home safety solutions, including our latest Specification range, and the wide ranging solutions we’re able to provide to both installers and their clients.”

In addition, ELEX show visitors will have access to many of the top brand names in the industry, the latest products and equipment to enter the market, essential seminars and CPD, and a free bacon roll and PE t-shirt.

You can visit the FireAngel team on stand J70 at ELEX Manchester this month.

NEXT SHOW: EVENT CITY, MANCHESTER ● DATES: MARCH 12/13 ● REGISTER FOR YOUR FREE TICKET AT: WWW.RDR.LINK/EN008 24 March 2020 PROFESSIONAL ELECTRICIAN

PE Page Grid_Layout 1 30/01/2020 09:41 Page 1

PE Page Grid_Layout 1 05/02/2020 09:58 Page 1

027_PE_MAR20_Layout 1 06/02/2020 11:00 Page 1

W IN

PRIZE DRAW

WIN A C.K AUTOMATIC CABLE & WIRE STRIPPER There are five up for grabs this month!

S

tripping cables couldn’t be easier with C.K Cable and Wire Stripping Tools, offering fantastic features and benefits that provide simple, fast, effortless and precise solutions, whatever the job. Designed to cover a wide range of applications, the range includes:

C.K Automatic Cable & Wire Stripper (T1260) Designed to strip flat cables up to 12mm in width, this superb cable and wire stripper quickly removes both the external sheathing and internal conductor insulation. An automatic size adjustment makes for added convenience, plus an integrated wire bending hole for termination preparation.

C.K Automatic Wire Stripper (T1261) Designed for stripping solid and stranded wires from 0.2 6.0mm² (24-10 AWG) these clever wire strippers provide automatic wire size adjustment for convenience.

C.K Universal Cable Stripper (T1270) Provides razor sharp, pre-set stripping blades for fast, precise and damage free stripping of all common round cables with 8-15mmØ.

C.K Coax Cable Stripper (T1271) Razor sharp pre-set stripping blades, for fast, precise and damage-free stripping of all common coaxial cables. Suitable for stripping cables of 4.8-7.5mmØ, as well as stripping 3-core flex.

C.K Cable Stripper (T1280) Features a blade that repositions for cutting both around and along cable sheathing, as well as adjustable cutting depth to prevent damage to the inner conductor. The Titanium-Nitrade (TIN) coated blade prolongs blade sharpness and a handy spare cutting blade is stored within the handle.

ENTER THE FREE PRIZE DRAW AT: WWW.RDR.LINK/EN009 Deadline for entries: 10/04/2020. Usual T&Cs apply.

028_PE_MAR20_Layout 1 06/02/2020 11:28 Page 28

THE

CODEBREAKERS LEE MAJORS O’HARE: YES, THAT IS 1MM T&E YOU CAN SEE! THIS WAS WIRED UP BY A PLUMBER – ENOUGH SAID! Something we see quite a lot of is undersized conductors, installed by either DIY customers or very poorly trained tradespeople. Those reasons, however, do not give the perpetrators of this kind of work any right to endanger themselves or others in this way. The very serious ramifications of this kind of infringement are that there may very well be multiple examples of a similar nature, in properties the installer has worked in. I don’t know how this was discovered – whether it was part of a regular EICR, a pre-sales EICR or a homeowner just looking for a “peace of mind” EICR – but we can now see why the Private Rented Sector (PRS) has been legislated and now requires private rented properties to have EICRs carried out at a maximum of five years frequency, by law. I can’t comment on any containment or installation issues, or if there is any main or Supplementary bonding in place, or whether there is an RCD protecting the location, etc., as that information isn't available through the photo. So, to code the 1.0mm2 twin and earth cable, in this instance, we need to understand that its current carrying capacity has been significantly underrated, and the potential for overheating at terminals and cable insulation damage due to overheating is high. The only code available to give here is, therefore, a C2. A potentially hazardous piece of electrical installation work, which could easily lead to a fire.

The Observations, Regulation infringements and Codes applicable to this observation would be.

Incorrectly sized shower supply cable

GET THE BOOK AND CRACK THOSE CODES!

133.2.2, 433.1, 523

C2

Updated for BS 7671:2018, NAPIT’s EICR Codebreakers publication is purpose-written to aid contractors, inspectors and clients, and now includes updates to align with the 18th Edition of the Wiring Regulations. A 2018 Professional Electrician & Installer ‘Top Product’ award winner, the book is the perfect technical aid for electrical professionals and their customers.

28 March 2020 PROFESSIONAL ELECTRICIAN

028_PE_MAR20_Layout 1 06/02/2020 11:30 Page 29

Need help with cracking those all-important EICR codes? Every month the technical team at NAPIT will be studying your latest ‘Caught on Camera’ photos and offering advice on the next steps, should you find a similar installation. If you want the team at NAPIT to help crack your codes then send your pictures through to us at: pe@hamerville.co.uk

NIGEL JEFFREY: I SPOTTED THIS WHEN I WAS INSTALLING AN AUTOMATED GATE SUPPLY. NOTE THE 3-PHASE ELCB WITH THE MISSING TERMINAL COVER AND THE METAL CLOTHES AIRER PROPPED UP UNDERNEATH! In this situation we can see the inherent danger from leaving live parts accessible, as the client will always find a use for the space the DB is sited in!

The risk to life here, from contact with the exposed conductors in the Earth Leakage Circuit Breaker (ELCB), is very high, and can only be awarded a C1. The ELCB itself would normally attract a C3, providing it operated adequately. If the ELCB was installed for fault protection and didn’t operate, it would attract a C2 code. In this picture, we can see RCDs in a split load board, so there is mileage to consider if the ELCB needs to be there, and even if it is defective, there is still adequate protection. However, we can only see a snapshot of multiple DBs so we’ll take for granted that it works and is needed when we code it. It’s worth mentioning also, as its difficult to tell from the picture, if it is a voltage or current operated ELCB. The voltage type being the earlier version and usually had a yellow test button, with later versions being current reliant using a red button, but this isn’t definitive proof of type. The inspector here will be in a position to more accurately decide upon the type and fate of this ELCB. Looking at the rest of the picture, we also have to take account of the DB/ELCB tails and CPCs not being adequately supported, which could lead to strain on terminations, and in turn

could lead to loose and overheating terminals or a shock risk, if live conductors are pulled out of their terminations completely. It also looks as if the drying apples are leaning against the meter tails, but that's out of shot so we’ll leave this for the inspector to check. Pretty standard findings on an EIC, but still very dangerous, and could be rectified fairly easily.

The Observations, Regulation infringements and Codes applicable to this observation would be.

Cover missing from ELCB access to live parts

W

C1

Cables not adequately supported to prevent strain on terminations

134.1.1, 522.8.5

C2 C3

ELCB device does not comply with the current version of BS 7671, but does still operate

133, 651.2 (v)

The 18th Edition Codebreakers publication is priced at ÂŁ17.99* (members) or ÂŁ19.99* (non-members). Hard copies and digital issues are available. * prices exclude VAT, postage and packaging

VISIT: WWW.RDR.LINK/EN010

C3

PE Page Grid_Layout 1 04/12/2019 11:41 Page 1

031_PE_MAR20_Layout 1 06/02/2020 11:31 Page 31

Technical & training

TAKING YOU STEP BY STEP THROUGH PROCEDURES AND REQUIREMENTS FOR ELECTRICAL INSTALLATIONS

PROTECTIVE MULTIPLE EARTHING (PME)

T

his article explains the operating characteristics of the protective multiple earthing (PME) facility, typically known as the TN-C-S system, which is commonly used in both new and existing electrical installations.

Introduction

In a PME arrangement the supply neutral conductor acts as both protective and neutral conductor, and is connected to multiple earthing points along the supply network as shown in Fig 1.

distributor. Regulation 543.4.1 requires that separate neutral and earth conductors must be used within the consumer's installation generally, except where one of the conditions described in Regulation 543.4.2 is met.

Because the supply neutral is connected to earth in a PME system, the fault return path for both line to earth and line to neutral faults is via the combined conductor. Using the combined conductor in this way has the advantage of providing the return path with a low impedance typically allowing for rapid disconnection of circuit protective devices under fault conditions. The Distribution

Origin

Exposed-conductive-part

Line conductor L1 FAULT

Source

Load

LOAD

PEN conductor

Link

Additional source earth

Earthing conductor

Circuit protective conductor MET

Main protective bonding conductor Extraneous-conductive-part such as metallic pipework

Source earth electrode

Fig 1

Earth

PME earthing arrangement

Basic protection

The supply neutral conductor of a PME earthing facility, often referred to as a PEN (protective and neutral combined) or CNE (combined neutral and earth) conductor is terminated at the distributor’s switch gear (cut-out) where connection of the earthing conductor to the supply neutral is achieved by means of an internal link provided by the

Network Operator (DNO) will typically specify a significantly lower maximum external fault loop impedance Ze for a TN-C-S system than for a TN-S system of the same current rating.

The returning current in a PME system has two possible paths, through the combined conductor and the general mass of Earth.

Depending on their relative impedances,

some current, often referred to as diverted or circulating neutral current, may return via the general mass of Earth. For this reason a PME system is not permitted in hazardous locations such as petrol filling stations where there is high risk of ignition or explosion. Other issues relating to a PME system may include the following: Perceived shock

A small voltage difference may exist between the PME earthing terminal at the origin of the installation and the general mass of Earth under normal conditions, and is dependent on the distribution network configuration and loading conditions.

This small voltage above Earth potential could, under certain circumstances, result in a ‘perceived shock’ for a person simultaneously in contact with an exposedconductive-part or extraneous-conductivepart and ‘Earth potential’. Such effects may occur in locations where a reduction in body resistance is likely, for example due to the presence of water such as a shower area within a sports facility.

Open-circuit PEN conductor

An open-circuit in the PEN conductor within the network, as shown in Fig 2, can cause the combined neutral/earth terminal at the consumer’s cut-out to rise above Earth potential due to load currents from installations downstream from the open-circuit. Consequently, the protective conductors at the main earthing terminal and subsequently all other protective conductors within the installation are also likely to rise in potential. Where T&E cables are used, having an uninsulated and reduced size of circuit protective conductor (cpc), the heat generated from the circulating currents may, in some cases, transfer through the cable and/or melt the outer sheath.

Any metallic parts, such as gas and water pipework connected within the consumers’ installation are also likely to rise above earth potential, creating a shock risk to any person in simultaneous contact with such parts and the general mass of Earth.

PROFESSIONAL ELECTRICIAN March 2020 31

031_PE_MAR20_Layout 1 06/02/2020 11:31 Page 32

Technical & training L1

Note: Table 54.8 of BS 7671 is also applicable for a PNB system, a variant to the PME system.

PEN

Where the PME supply is extended from a dwelling to a detached outbuilding, such as a garage, these bonding requirements will also need to be applied to any extraneousconductive-parts within that area.

Open-circuit in PEN conductor

Additional source earth

Source earth

PME terminals

N

L

RCD does not offer protection against open-circuit PEN fault

Load

Due to the practicalities for satisfying these bonding requirements at the load end the contractor may decide to convert the earthing arrangement within the garage to a TT system incorporating an earth electrode (Regulation 542.1.2.3) combined with an RCD (Regulation 411.5.2).

Consumer’s installation

Although a TT system provides less onerous bonding conditions than those associated with a PME, it also presents its own set of issues. The risk of causing damage to other buried services is greater when installing earth electrodes. In addition, it may be difficult to provide sufficient separation between the installed earth electrode and other buried metalwork connected to the supply PEN conductor.

Person in contact with Earth, touching exposed-conductive-part

Shock current returns via mass of Earth

Red arrows denote path of shock current

Fig 2

Summary Open circuit in the PEN conductor

For this reason, it may be inappropriate to use a PME system in some premises and prohibited in certain other installations.

For example, Regulation 9(4) of the Electricity Safety Quality and Continuity Regulations 2002 (as amended) prohibits the connection of a combined neutral and protective conductor to any metal work in a caravan or boat. However, connection to the PME terminal is permitted for fixed buildings of the location such as offices, restaurants or shops but it must not be used for the caravan or boat mooring supplies.

To reduce the risks linked with a PME, the combined conductor is earthed at multiple points along the network and bonding is provided within the consumer's installation, in accordance with BS 7671.

• •

Bonding Conductors

Due to the low earth loop impedance and increased fault currents within a consumer's installation, typically associated with PME, all main protective bonding conductors must be sized in accordance with the PEN conductor of the supply and Table 54.8 of BS 7671, reproduced in Table 1.

Although the distributor may have initially provided a PME earthing arrangement for an installation, where an addition or alteration is to made it is the responsibility of the installation designer to assess its suitability and adequacy for the altered circumstances. Where necessary, alternative means of earthing such as a TT system may be used.

However, in some cases the DNO may require a larger conductor.

Table 1

Minimum cross-sectional area of main bonding conductors in relation to the neutral of supply.

Copper equivalent cross-sectional area of the supply neutral conductor (mm2)

Minimum copper equivalent cross-sectional are of the main protective bonding conductor (mm2)

35 or less Over 35 up to 50

16

Over 50 up to 95

25

Over 95 up to 150

35

Over 150

50

For other guidance and publications please see the NICEIC and ELECSA website.

For information about the NICEIC and ELECSA Approved Contractor or Domestic Installers schemes, visit www.niceic.com, www.elecsa.com or call 0333 015 6626

www.niceic.com | www.elecsa.com 32 March 2020 PROFESSIONAL ELECTRICIAN

10

PE Page Grid_Layout 1 07/01/2020 10:37 Page 1

034_PE_MAR20_Layout 1 06/02/2020 11:32 Page 34

TECHNICAL & TRAINING

Gary Parker, ECA Technical Manager, takes a look at the ‘ins’ and ‘outs’ of AFDDs.

AFDD TECHNOLOGY: BEST PRACTICE ADVICE

I

t has been over a year since the 18th Edition Wiring Regulations (BS 7671:2018) came into full effect. While most of the changes appear to have gone smoothly, there are still questions around the use of Arc Fault Detection Devices (AFDDs). Before we go into those, let’s review the basics…

AFDD 101 AFDDs are circuit protection devices, like miniature circuit breakers (MCBs) and residual current devices (RCDs), although they offer a different type of protection.

They’re essentially microcomputers that sit with an overcurrent protective device, though they can be combined. They’re designed to look for the signature of an electrical arc. Upon detecting this signature using complex algorithms, the device will operate.

For ‘arc’, you can read ‘spark’ – from a small fault in a circuit between two live conductors or live conductors to earth.

These are usually caused by damaged cables, loose connections or some other breakdown in insulation, and they can generate enough heat to start a fire.

34 March 2020 PROFESSIONAL ELECTRICIAN

Pre-existing devices which are mandatory in the Wiring Regulations – circuit breakers, fuses and residual current devices – may not always respond to the small arc faults which would activate an AFDD.

A closer look at the benefits AFDDs carry many benefits. For one, they provide protection where other devices cannot. Government statistics show that, in 2016/17, there were more than 13,000 fires in England which occurred in electrical distribution and other electrical appliances.

Although there is no direct evidence to suggest these were directly caused by electrical arcs (and such evidence can be hard to find), it is sensible to suggest that AFDDs could help to lower these figures.

On the other hand, while they provide a great supplement to a full life protection system, AFDDs aren’t perfect. They require a minimum load, take up additional space in boards (which may not been designed to accommodate them), and they may not detect all potential faults on ring final circuits.

Also, they’re not updateable – AFDDs

are essentially microcomputers with a rudimentary ‘operating system’ – so they may become outdated by newer models.

Are AFDDs mandatory?

AFDDs are not mandatory – at least not yet. The devices have been around the industry for some time but only rarely used. The 18th Edition has highlighted these devices by recommending their use – but the key word here is ‘recommending’. As such, the Regulations leave the choice to use them down to the designer of the installation.

The designer will therefore have a few points to consider before committing to a design decision, such as: ●

●

●

●

Worthiness of the perceived additional protection offered, Possibility and consequences of ‘nuisance tripping’, Practicality of installing such devices – particularly regarding switchgear enclosure size, Any requirements imposed by device manufacturer regards testing and maintenance,

034_PE_MAR20_Layout 1 06/02/2020 11:33 Page 35

Picture courtesy of ABB

●

●

Costs – which can quickly escalate as AFFDs are usually needed on each circuit and they can be expensive (of course, cost is not to be considered against safety), Potential future design liability.

Best practice? A balanced approach A good-practice risk assessment approach for AFDD usage should equally weigh the pros and cons of adding AFDDs to a life protection system (a full set of devices including RCDs, MCBs, surge protection devices and others, designed to make

installations as safe as possible). Cost alone should never be the overriding factor – any good designer should always put safety first.

Equally, a good risk assessment should have considerable input from an electrically skilled person as well as the client or end user. AFDD inclusion should be considered as part of an overall fire protection strategy and their limitations should be considered and discussed with the client beforehand.

AFDDs can certainly be of benefit to some installations. However, they’re not to be considered as the only protection measures. They can be added to existing protective measures where their benefit is clear, but they must be carefully considered, lest an installation becomes over-engineered.

GET MORE ECA TECHNICAL INFORMATION AND GUIDANCE ON AFDD TECHNOLOGY AT: WWW.RDR.LINK/EN011

PE Page Grid_Layout 1 30/01/2020 09:38 Page 1

037_PE_MAR20_Layout 1 06/02/2020 11:34 Page 37

TECHNICAL & TRAINING

The installation of EV charging points is a fast-growing and promising market. If you’re going to carry out this kind of work, however, there are a few things you need to know about testing them, says Peter Wade of Megger.

EV CHARGING POINT TESTING: WHAT YOU NEED TO KNOW

B

efore we start, it’s important to note that this short article provides general guidance only, and before you work on EV charging points you should make sure you’ve read and understood Section 722 of the IET Wiring Regulations.

You will see that each charging point must be protected by at least a Type A RCD, with a sensitivity of 30 mA or less, and that this must trip within 40ms when tested with a residual current of five times the sensitivity rating.

In addition, if the charging point has a socket outlet or a vehicle connector in line with BS EN 62196, protection against DC fault currents must be provided, unless

this protection is provided by the charging equipment itself. This means that each of these charging points must have a Type B RCD or a Type A RCD with additional equipment to disconnect the supply if there’s a DC fault current of 6 mA or more.

When you’re testing charging points, be aware that not all instruments can test

Type A and Type B RCDs and some can’t supply the necessary 6 mA test current.

The best solution is to use an instrument like the new Megger MFT1741+ that has specific provision for testing EV charging points. An instrument of this type will carry the full range of RCD tests followed by two DC ramp tests at 6 mA. This makes it easy for contractors to ensure that the charge points are properly tested in line with the IET Wiring Regulations.

DOWNLOAD A MEGGER MFT1741+ TECHNICAL DATA SHEET AT: WWW.RDR.LINK/EN012

PE Page Grid_Layout 1 01/04/2019 12:30 Page 1

039_PE_MAR20_Layout 1 06/02/2020 11:34 Page 39

TECHNICAL & TRAINING

TEMPORARY SOLUTIONS NAPIT’s Bill Allan looks at the requirements for contractors in the event that a temporary electrical installation is required.

W

hen many of us in the electrical contracting industry consider temporary electrical installations, we tend to think of the wide range of short-term installations such as public or private exhibitions or events, parties or events associated with the entertainment industry like touring shows, theatrical, radio, TV or film productions.

But in fact, temporary electrical installations are usually required at some stage for a range of new building projects, large and small, and even existing buildings can be subject to temporary installations. A temporary supply may also be required where a building is to be demolished or even needed due to unforeseen circumstances, such as failure of critical supplies. In short, temporary supplies are an integral part of the electrical installation industry.

READERLINK 025

This article will address the topic of temporary electrical installations. We’ll discuss two specific scenarios, each requiring temporary supplies for different reasons and each having very different loads. We’ll then review some issues to consider when installing temporary power supplies.

Scenario 1 – a data centre In a large data centre, a rising busbar with a source from an air circuit-breaker (ACB) rated at 3,200 A, supplies main switch panels each of which, in turn, supplies critical IT loads and their associated supporting infrastructure, such as cooling equipment. Due to recent flooding, the main busbar has shorted out, resulting in a loss of supply.

An uninterruptible power supply (UPS) had been installed. The UPS system is comprised of a battery system to supply IT equipment during short-term outages, backed up by diesel generators. When the

supply failed, the UPS system took over and performed as intended.

However, a replacement busbar had a six-week delivery time and there would be a further delay to allow for its installation due to business critical issues. A realistic estimate was that it could take two to three months to replace the busbar. The manufacturer of the generators advised that the generators couldn’t be relied upon to maintain the supply adequately for that amount of time.

To ensure resilience of supply for the critical system, a decision was taken for the temporary installation of cables to replace the rising busbar to power the critical loads until the replacement busbar could be installed. The cables could then be run from the original ACB to the main switch panels supplying the critical loads.

Scenario 2 – a construction site In a large construction site, the site project manager had underestimated the power

PROFESSIONAL ELECTRICIAN March 2020 39

039_PE_MAR20_Layout 1 06/02/2020 14:45 Page 40

TECHNICAL & TRAINING

requirements for the site and separate generators had to be installed to provide temporary supplies to the tower crane, hoist and maintained lighting for ats under construction.

A document of interest is BS 7375:2010, Code of practice for distribution of electricity on construction and building sites.

BS 7375 is referred to in two notes in Section 704 of BS 7671 with regard to PME earthing facilities and Regulation 704.411.3.1 places restrictions on the use of PME earthing for an installation falling within the scope of Section 704. Most construction sites are provided with a TT supply which requires an RCD to provide automatic disconnection in case of a fault.

Regulation 704.411.3.2.1 states that an RCD with a rated residual operating current not exceeding 500 mA must be used (consult this Regulation for the complete requirements).

Guidance on earthing is contained in BS 7430:2011 +A1: 2015, Code of practice for protective earthing of electrical installations.

Temporary electrical installations and BS 7671 Temporary electrical installations can carry risks, even in the most benign of environments.

BS 7671 applies, not only to fixed installations, but also to temporary installations. There is no relaxation of safety standards in BS 7671 for temporary installations.

BS 7671 deďŹ nes a temporary electrical installation as an, ‘Electrical installation erected for a particular purpose and dismantled when no longer required for that purpose’ (Part 2, DeďŹ nitions).

Regulation 110.1.3 states that, in some cases, BS 7671 may need to be supplemented by the requirements or recommendations of other standards and, included in a list of examples is BS 7909, Code of practice for temporary electrical systems for entertainment and related purposes (item ix).

Running temporary cables The cross-sectional area (csa) of the temporary cables must be adequate for the loads to be supplied, taking voltage drop into account together with any

40 March 2020 PROFESSIONAL ELECTRICIAN

7HPSRUDU\ HOHFWULFDO LQVWDOODWLRQV PXVW EH GHVLJQHG LQ DFFRUGDQFH ZLWK DOO UHOHYDQW UHTXLUHPHQWV LQFOXGLQJ %6 applicable rating factors.

When running temporary cables which are buried in the ground, the general requirements for buried cables given in Regulation 522.8.10 must be consulted.

That is, the cable must either be run in a conduit or duct or else have an earthed armour or metal sheath, or both, suitable for use as a protective conductor incorporated.

Buried cables, conduits and ducts must be buried at a sufficient depth to avoid being damaged by any reasonably foreseeable disturbance of the ground. A depth of 0.5 metres is generally considered as a minimum depth.

When running temporary overhead cables, the guidance contained in Appendix G of IET Guidance Note 1, Selection and Erection and also in Table D2 of the IET On-Site Guide is applicable.

Generally, overhead cables must be suitable and adequately supported with a maximum length of span of 30 metres and a minimum height above ground of 5.8 metres where vehicles may run underneath and 3.5 metres in areas inaccessible to vehicles.

Guidance for running underground and overhead cables in specific circumstances are given in Sections 708, 709, 730 of BS 7671.

Conclusion There is no limit to how long a temporary electrical installation may remain in operation and the designer must consider the possibility that it might remain in operation for longer than anticipated and design the system accordingly.

When designing temporary installations, the risks must be assessed, and certiďŹ cation must be provided in accordance with BS 7671.

Table 3.2 of IET Guidance Note 3 Inspection and Testing contains recommended initial frequencies of inspection of electrical installations.

Temporary installations are not mentioned specifically but the recommendation that construction site installations should be inspected and tested every three months seems reasonable to apply to temporary installations.

FOR MORE INFORMATION ON NAPIT SCHEME REGISTRATION, VISIT: WWW.RDR.LINK/EN013

PE Page Grid_Layout 1 30/01/2020 09:45 Page 1

042_PE_MAR20_Layout 1 06/02/2020 11:36 Page 42

TECHNICAL & TRAINING

ARE YOU USING THE 40/70 RULE?

When specifying a heat recovery system it is vitally important that the guidance of approved document F is followed closely, as Blauberg’s Rob Holton explains.

H

eat recovery units are generally sized to meet the needs of a given property; the number of bedrooms, the number and nature of wet rooms, the overall size in metres squared, the number of occupants in permanent residence and the air tightness of the property are all factored into the equation. But what of the day-to-day reality of living in a heat recovered house?

Heat recovery (or MVHR) is one of the three continual ventilation solutions as recognised by approved document F (the other two being MEV and PIV) and is the only solution that has a fully balanced extract and supply of air that is mechanically controlled. Being continuous, MVHR airflows are calculated at a lower rate than intermittent airflows and, as such, the only time that this airflow is adjusted is when it is increased. The unit is never switched off.

42 March 2020 PROFESSIONAL ELECTRICIAN

Approved document F had a major revision in 2010 based on a survey of properties built to the 2006 edition. The survey showed that numerous examples of MVHR systems were failing due to the occupants switching them off. The reason that these units were being switched off was found to be noise.

Occupants complained that the units were too noisy at night and would switch them off before going to bed and then back on again (if they remembered) in the morning, thus rendering the system intermittent and no longer able to maintain the required airflows. This led to poor air quality, sub-standard ventilation, condensation build-up, black mould and, in some cases, health issues.

In many examples, the survey revealed that the noise was down to poor installation and a lack of understanding by the end user but it was also noted that the

specification of some of the units had been compromised in order to keep costs to a minimum.

So, what is the 40/70 rule and what does it have to do with this?

This is simply a failsafe method to ensure that the unit that has been specified will always meet the requirements of the end user, both in terms of Part F and customer satisfaction.

When a trickle and boost rate have been calculated, make sure that the unit is capable of these requirements at no more than 40% of their total capacity for the trickle rate and 70% of their total capacity for the boost rate. For example, if there is a total trickle requirement of 38l/s and a boost requirement calculated at 62l/s you might assume that a unit that is capable of 80l/s, at the relevant resistance to your ductwork system, would be adequate.

042_PE_MAR20_Layout 1 06/02/2020 11:36 Page 43

The problems that you could encounter with this are that the unit would be running on trickle (all day and all night) at 47.5% of its total capacity and would boost to 77% of its total capacity. If you’ve ever had the chance to experiment with the engineering mode of a heat recovery unit, you will know that the difference between an acceptable trickle rate of 37.5% and a seemingly acceptable rate of 47.5% is significant in terms of noise and, let’s not forget, energy consumption.

With modern house designs favouring ever increasingly spacious homes that have a disproportionate ratio of individual rooms to overall floor space, I often find that the calculations for the trickle rate actually exceed the calculated boost rate and, as such, a single rate is used. With this in mind it becomes even more important to ensure that the specified unit is not going to ever be switched off and, by following the simple rule of no

more than 40% of total capacity for the trickle rate and 70% for the boost rate, you’ll know that you’ll not be getting a call back from an unhappy customer.

FIND OUT MORE ABOUT BLAUBERG’S BPEC DOMESTIC VENTILATION TRAINING COURSE AT: WWW.RDR.LINK/EN014

PE Page Grid_Layout 1 04/02/2020 10:45 Page 1

045_PE_MAR20_Layout 1 06/02/2020 11:38 Page 45

TECHNICAL & TRAINING

COMMERCIAL SURGE PROTECTION:

WHAT TO CONSIDER

Mike Lawrence, Marketing Manager – Commercial Buildings at Hager, discusses some of the key considerations to be aware of when selecting surge protection devices for your installation.

T

he protection of expensive and important equipment against transient overvoltages means the inclusion of surge protection devices (SPDs) is a critical aspect of a successful and safe commercial installation.

Following further clarification on the role of SPDs in 2019’s 18th Edition Regulations, electrical designers and contractors need to ensure they fully understand their responsibilities and the potential impact of technical aspects, such as device integration into assemblies and subsequent performance.

One of the outcomes of last year’s changes was an increased focus on equipment protection against surge transient voltages.

In commercial installations, the new Regulations clarify why and where a surge

protection device should be fitted, while stating it is the responsibility of the electrical designer to ensure the installation is compliant.

The Regulations are clear: protection against transient overvoltages needs to be provided where the consequences caused by overvoltage could: 1. Result in serious injury, or loss of human life, or 2. Result in interruption of public services and/or damage to cultural heritage, or 3. Result in interruption of commercial or industrial activity, or 4. Affect a large number of co-located individuals.

The above accounts for the vast majority of commercial installations, ranging from public buildings and business premises,

and require the inclusion of surge protection. In the unlikely event that a non-domestic installation is not covered in the aforementioned four scenarios, then a risk assessment needs to be performed.

Should the outcome of this risk assessment indicate that surge protection devices are needed, it’s a requirement they are installed. Likewise, if the risk assessment isn’t performed then surge protection devices should be installed.

The 18th Edition of BS7671 has placed a new spotlight on the subject of surge protection in buildings.

Today, significant issues connected to areas such as standard conformity, installation variables and potential solutions, are increasingly important considerations for electrical professionals who want to achieve the best and safest installation result.

PROFESSIONAL ELECTRICIAN March 2020 45

045_PE_MAR20_Layout 1 06/02/2020 11:40 Page 46

TECHNICAL & TRAINING

The link between BS7671 and BS EN 61439 Ensuring conformity of electrical distribution assemblies to BS EN 61439, where third party devices are incorporated into assemblies, creates challenges for manufacturers, panel builders and installers alike. Proving credible evidence that assemblies remain compliant with BS EN 61439 often requires additional testing, or can be achieved by calculation or derivation, where additional devices are added to the assembly. SPDs are not ‘Watt loss’ generating devices, but never-the-less, take up space in the assembly and could affect thermal testing results of the complete assembly.

Installation variables SPDs are designed to limit overvoltages from surge voltage transients in electrical systems by diverting them to Earth.

Section 443 of the Regulations provides guidance for the rated impulse voltages for overvoltage categories and includes further guidance on the type of SPD required to protect equipment.

46 March 2020 PROFESSIONAL ELECTRICIAN

However, the technical data that indicates the level of potential let through Voltage Up that the SPD achieves, is derived by testing the SPD in ideal conditions. Installation variables, which could include the length and diameter of conductors used to connect the SPD to the electrical system, bends in cables, the location of the SPD and effectiveness of Earth conductors, all affect the actual level of protection Up value that the electrical system sees, downstream of the SPD. These installation variables can combine, with the potential for a significantly higher Up value and therefore a significantly lower level of protection of sensitive electrical equipment. Poor integration of the SPD can easily result in a measured let through Up value that leaves equipment vulnerable to transient overvoltages.

SPD performance testing in assemblies – a new solution from Hager By measuring the actual Up value at the distribution board busbar system, the impact of installation variables can be

compared to the published let through Voltage Up of the SPD device. Through development trials, using fast transient generators and fast scan oscilloscopes, Hager has re-engineered the integration of the SPD devices, changing the location of the SPD in the distribution board where required and, in some cases, replacing cable connections with solid copper links for Line, Neutral and Earth connections, to achieve enhanced Up values as measured at the distribution board.

With a tested level of performance achieved through development testing, specifiers and installers of electrical distribution boards are now able to provide building owners and operators with a greater level of assurance that the SPD designed to protect end equipment from damage has been integrated to achieve the highest level of protection.

DOWNLOAD A COPY OF HAGER’S 18TH EDITION SURGE PROTECTION FLYER AT: WWW.RDR.LINK/EN015

PE Page Grid_Layout 1 08/01/2020 10:12 Page 1

048_PE_MAR20_Layout 1 06/02/2020 11:54 Page 48

Working on your own? Need some technical advice? Don’t know where to turn? Ask Megger. What it doesn’t know about installing and testing electrical systems isn’t worth knowing. Every question will be answered by the Megger Technical Team, and the best will be published in Professional Electrician. So, take advantage of the ‘every question answered’ guarantee today. Email your questions to: meggermeasures@hamerville.co.uk

You asked: ELECTRIC VEHICLE (EV) CHARGE POINTS ARE STARTING TO BECOME QUITE POPULAR IN MY PART OF THE WORLD, BUT I’VE HEARD THAT WHEN YOU’RE TESTING THEM, YOU HAVE TO TEST THE RCDS WITH BOTH AC AND DC CURRENT. IS THAT TRUE AND, IF SO, HOW DO I DO IT?

We say: Yes, it is true. A charge point should be protected by its own 30 mA Type A RCD to provide Earth fault protection. It must have additional protection (within the charge point) that provides disconnection of the supply in the case of DC leakage currents above 6mA. This could be an additional RCD or a protective device within the charging equipment itself. The best way to test these RCDs is to use an instrument that’s been specifically designed for the job, such as Megger’s latest MFT1741+ multifunction installation tester. When you’re using an MFT1741+, you simply connect it to the charge point via an adaptor and select the AUTO EV testing mode. Then you use the adaptor to simulate the connection of a car to the charge point. As soon as it detects the charger switching on, the MFT1741+ starts the auto test sequence, which includes both the AC and DC tests. When the test is finished, you can recall the results to the screen or save them in the instrument’s internal memory for downloading later. It’s as easy as that!

GET MORE PRODUCT DETAILS AND INFORMATION AT: WWW.RDR.LINK/EN016

48 March 2020 PROFESSIONAL ELECTRICIAN

PE Page Grid_Layout 1 04/02/2020 11:00 Page 1

PE Page Grid_Layout 1 30/01/2020 09:47 Page 1

051_PE_MAR20_Layout 1 06/02/2020 13:35 Page 24

ADVERTISING FEATURE

MORE LIGHT & LESS MESS WITH ENGEX

E

ngex is proud to be featuring two new additions to the range of products: the new GX-PFL pocket friendly work light and the new GX-FPC25 carpet protection film.

Continuing its tradition of delivering innovative products to the professional contractor, the two new products enhance Engex’s portfolio further still, with yet more must-have tool box gadgets and essential products now available.

Pocket rocket The GX-PFL pocket friendly work light is packed with many features and benefits; with its 7W high-power COB LED output it’s a product that suits itself for many applications. The GX-PFL offers three modes of output: a full high-power mode of 700 lumens with a run time of two-hours, a second mid-power mode of 350 lumens with a run time of four-hours, and finally an efficient ECO mode of 100 lumens at ten-hours. The result is a flexible pocket light packing plenty of punch for its size, standing at just 10cm tall and weighing as little as 243g.

Equipped with a high quality Li-ion battery, performance is enhanced, while the GX-PFL can be charged within four-hours via a micro USB connection (charger provided). Boasting exceptional flexibility, the GX-PFL is equipped with a full 360˚ robust magnetic handle. So, whether you’re utilising the light or simply attaching it to a magnetic surface – allowing you to display the light from various angles – you’re covered.

Manufactured from incredibly tough aluminium and rigorously tested, the GX-PFL has withstood impact from heavy machinery and vehicles, one of which was a tank!

Cleaning up Engex’s second newest addition to its range of products is the innovative carpet protection film GX-FPC25, the superior alternative solution to everyday dust sheets.

The adhesive clings to the carpet to ensure the film establishes a grip and remains firmly stuck into position, allowing the user to roll the film out over a carpet for a snug fit to walls and skirting boards.

Supplied as a roll 600mm wide and 25m

long, this tidier way of protecting surfaces is also water resistant. Whether it’s painting and decorating or simply ensuring carpets are covered from dirt during installations of any kind, the Engex GX-FPC25 film is the quickest and safest way to protect surfaces.

The GX-FPC25 is easily removed after use, ensuring surfaces are left in the same condition as before without leaving any adhesive residue behind. The film allows for a mess-free installation while remaining a cost-friendly solution, meaning the user won’t have to worry about expensive clean-up costs and carpet replacements.

FOR MORE ON ENGEX’S EXTENSIVE RANGE OF PRODUCTS, VISIT: WWW.RDR.LINK/EN017

PROFESSIONAL ELECTRICIAN March 2020 51

052_PE_MAR20_Layout 1 06/02/2020 13:34 Page 52

PRODUCTS & BUSINESS SOLUTIONS

ISOLATE, BEFORE IT’S TOO LATE Di-LOG’s Business Development Director, Dave Sweetman, offers electricians a reminder of the vital need to isolate live circuits in their work, and highlights some new products that can help you and your colleagues to stay safe on-site.

E

very electrician with experience of working on a busy site knows how it feels to take responsibility for themselves and the other tradesmen around them.

When you're dealing with live electricity there’s no room for calculated risks and educated guesses. The only way you can ensure the safety of you and your colleagues is through adopting adequate safe isolation procedures.

For electrical systems where the supply has been cut off to allow dead

52 March 2020 PROFESSIONAL ELECTRICIAN

working, Regulation 13 of the Electricity at work Regulations 1989 applies as follows: ‘Adequate precautions shall be taken to prevent electrical equipment, which has been made dead in order to prevent danger while work is carried out on or near that equipment, from becoming electrically charged during that work if danger may thereby arise.’

This establishes a clear requirement to ensure that conductors and equipment may not be inadvertently energised. In other words, safe isolation.

In practice this means not only cutting off the supply, but also ensuring the method of disconnection is secured in the OFF position and a caution notice or label is posted at the point of disconnection.

Safe isolation procedures To ensure installers conform with the latest requirement in BS7671 (18th Edition) – Guidance Note 2, lock off devices and ‘Safe isolation’ procedures are being enforced across the UK by all monitoring bodies.

052_PE_MAR20_Layout 1 06/02/2020 13:34 Page 53

the DLLOC2 Domestic Kit, you can enable multiple persons to work on the same circuit, with the ability to hold up to six lockout padlocks.

The DLLOC3 Professional and DLLOC4 Expert Kits provide more scope to safely isolate a broader range of MCBs and main switches. Items such as the larger universal MCB lockout device, large main switch lockout device, and a fully insulated padlock and hasp ensure all commercial and industrial applications are covered.

New Multiple Circuit Lockout Di-LOG has recently introduced several new products to its Lockout Tagout range, including the DL8115 Flexible Lockout Hasp, which enables you to lockout a multiple of devices with the fully insulated 1.8m wire.

CombiVolt Lockout Kits Di-LOG is always looking for ideas to encourage the use of safe isolation in the industry, so it has now packaged up its award winning CombiVolt x series 2 pole voltage indicators with the entry level Lockout Kit 1. The DL67xx-LOC1 series of kits are supplied with either the DL6780 LED or DL6790 LED and Digital Voltage Indicators.

Isolation of equipment or circuits using the main switch or distribution board switch disconnector is the preferred method. The method of isolation should be locked off using a unique key, retained by the person carrying out the work, and a caution notice posted at the point of isolation.

Where more than one operative is working on a circuit, a multi-lock hasp can be used to prevent operation of the main isolator until such time as all persons working on the installation have completed their work and removed their padlocks from the hasp.

The practice of placing insulating tape over a circuit breaker is NOT an adequate or acceptable means of securing the device in the OFF position.

Proving dead isolated equipment or circuits Following isolation of equipment or

circuits and before starting work it should be proved that the area you are about to work on is in fact dead. The recommended method for doing this is by use of a test lamp or a two pole tester (as recommended in HSE GS 38).

The test lamp or voltage detector should be proved to be working on a known live source or a proprietary proving unit. All line, neutral, and protective conductors should be tested to prove they’re dead.

2020: the year of safe isolation The Di-LOG range of ‘Lockout Kits’ are designed with safety, versatility and affordability in mind. With the entry level DLLOC1 Personal Lockout Kit, you get a 38mm steel padlock, a universal MCB lock, a standard ‘Pins-out’ MCB Lock and Warning Tag. The higher the level of kit the more features are included. By adding items such as multiple isolation lockout hasps to

VISIT A SPECIAL DI-LOG SAFE ISOLATION PAGE, CONTAINING MORE PRODUCT RESOURCES AND SPECIAL OFFERS, AT: WWW.RDR.LINK/EN018

PROFESSIONAL ELECTRICIAN March 2020 53

PE Page Grid_Layout 1 30/01/2020 09:50 Page 1

055_PE_MAR20_Layout 1 06/02/2020 12:03 Page 55

PRODUCTS & BUSINESS SOLUTIONS

REIMAGINING RETAIL

The bricks and mortar of retail has taken a battering in recent times, but innovative lighting controls can help to reimagine this industry, explains Phil McBrown, Area Sales Manager at CP Electronics.

R

ecent years have seen the traditional retail industry struggle to keep up with the digital world. The rise of eCommerce has forced many retailers into weighing up whether they put the investment into how their stores look, or into their online presence.

While online shopping undoubtedly offers convenience, the ability to touch, feel, smell, taste and listen to the products

that are being bought is something that some retailers are capitalising on.

Primark is one clear example of a retailer that still has hope for the high street. By successfully reinventing its presence in this space, it has made its store a go-to destination that offers a unique experience, rather than a place where cash is traded for clothes.

For the bricks and mortar economy, it’s a case of being truly innovative to attract customers back again. One ingredient to

making this happen is lighting and lighting controls. Clever controls can bring creativity to store designs, along with comfort, cost-effectiveness, and commerciality.

The defining factor It’s long been known that lighting is a vital retail asset to either draw attention to passers-by or create an ambient, welcoming environment. Some retailers use the commodity to full effect, making it a defining factor in their outlets.

Hollister’s stores, for example, are famed for their super low-light levels, while Apple has just patented a new smart ceiling design to use in next-gen Apple stores. The tech giants believe that uniform lighting delivers an ideal customer experience and offers flexible product display options for wide-open spaces, which is an Apple store hallmark.

This level of lighting design may sound dauntingly expensive and sophisticated; however, an impressive lighting display can be easily achieved through clever yet simple solutions. For instance, a fully addressable system that runs off the DALI protocol can allow for full control of individual luminaires, their lux levels and output. This is achieved by each fitting having its own unique

PROFESSIONAL ELECTRICIAN March 2020 55

055_PE_MAR20_Layout 1 06/02/2020 12:03 Page 56

PRODUCTS & BUSINESS SOLUTIONS

‘address’, enabling it to be programmed from either a lighting system attached to a head-end PC or tablet.

Luminaires can then be grouped together to form a range of ‘architectural lighting’ scenes, and controlled from scene plates mounted on walls, tablets, or the head-end PC. They can also be dimmed automatically with timers or dimmed manually based on need, and the output can be anything from 1% - 100%. What’s more, with solutions like CP Electronics’ RAPID system, LED lights can be programmed to provide tunable lighting.

For a more show-stopping effect, they can even change colours at various intervals.

When designing lighting systems in retail environments, it is also important to decide whether it will run off a DALI fully addressable system, or a DALI broadcast system. In simple terms, the former allows for each luminaire to be controlled individually, while the latter allows luminaires to be controlled in pre-defined groups and requires a hard-wired relay module to send the commands to the light fittings.

As the retail industry is a fast-moving environment, with concession stores and different occupiers coming and going, it’s important to have a flexible solution that can adapt accordingly. In this respect, fully addressable systems are at the pinnacle of flexibility. Once this type of system is installed, if any wholesale changes are needed to the pre-set scenes, then all that is required is a commissioning engineer to come out to help re-programme the lighting controls.

Flexible lighting controls also help with one of the latest retail phenomena – pop-up shops. These are outlets which retailers only occupy for a short amount of time before moving out again. A lighting control system that can be easily customised without the need to re-do the electrical wiring work is an added-value benefit that helps attract prospective retailers.

Not just for looks Going beyond individual shops, lighting controls are just as important for large-scale retailing, such as shopping centres and retail parks.

For instance, bright street lighting can

56 March 2020 PROFESSIONAL ELECTRICIAN

help light the way and discourage any would-be criminals in darker and remote areas. Applications where this would be useful include corridors, office spaces in retail areas, toilets, storerooms, and car parks. Of course, to help save money, lighting can be set to come on only when presence is detected.

Again, the lighting controls and detectors can be part of a fully addressable system. Alternatively, they can be installed as standalone detectors, set to dim to a desired output when presence hasn’t been detected for a pre-determined amount of time.

Detection, but not as you know it Lighting control solutions aren’t just useful for the aesthetic appearance of shops and stores and detecting presence. They can also play a huge role in helping streamline operations and processes for facilities managers (FMs) and building owners. This is especially the case in larger shopping centres, where hundreds, if not thousands, of luminaires and detectors could be deployed on the site. It can be a nigh-on impossible task to stay on top of all the fittings for even large FM teams.

Adding to this conundrum is emergency lighting, which needs to be tested at set intervals to comply with regulations. Typically, this is done by facilities managers assessing each emergency light fitting and manually starting the test, which involves draining the back-up battery in the fittings and then re-powering them up. The process, as you can imagine, is a labour intensive one.

However, with fully addressable lighting control solutions, this process can be made much more efficient. The tests can be timed to happen automatically, directly from the head-end PC. This means that FMs don’t need to walk around to each emergency light, and the test can be done when the shopping centre or store is closed to minimise disruption. Not only this, but with a system like CP Electronics’ RAPID solution, if there are any faults with the luminaire or the battery then a log file is created and stored on the system, enabling easy diagnosis.

The same principle applies to luminaires. Using the DALI protocol, the drivers and ballasts in the luminaire fittings can send signals back to the system and inform users about the status of the

055_PE_MAR20_Layout 1 06/02/2020 12:04 Page 57

luminaire and whether it is in a failed state or not. Through the use of lighting controls, FMs can gain back valuable time in ongoing maintenance of their buildings.

Bringing retail into the ‘experience economy’

Consumers are expecting more and more from their shopping experiences. Lighting controls are a big part of making it all possible and ensures that shops and centres don’t just become a place to buy things, but are instead a destination in their own right.

DOWNLOAD THE RAPID LIGHTING CONTROL BROCHURE AT: WWW.RDR.LINK/EN019

PE Page Grid_Layout 1 30/01/2020 10:20 Page 1

059_PE_MAR20_Layout 1 06/02/2020 12:10 Page 59

PRODUCTS & BUSINESS SOLUTIONS

SOUNDS GOOD I

We talk to the team at Hamilton Litestat to find out why its new wireless audio solutions range is helping installers to realise the potential in audio installations – no strings attached. nstalling home audio solutions has traditionally been the domain of experienced custom installers, but that’s no longer the case.

Technology has developed in such a way that the wiring, installation and set-up of such systems has been simplified, creating new project opportunities and an attractive revenue stream for professional electricians wishing to expand their business.

In its quest to help electricians to take the simple step into audio installations, Hamilton Litestat continues to lead from the front with the launch of a new range of wireless home audio products that are easy to install and configure.

The business case for wireless audio The earning potential for installers in home audio is immense. As technology simplifies and people become accustomed to more connected lives, streaming music has become the norm.

Spotify and Apple Music, two of the largest music streaming services, have over 150 million subscribers combined*.

Many enjoy this music on the go, in their cars and on their commutes, but listening in the home offers the opportunity to enjoy a higher quality audio experience.

In the UK, 93% of households have fixed broadband internet connections that enable devices to be connected and stream music via the Wi-Fi network

router**. There is huge potential to capitalise on this and offer quality home audio solutions that won’t break the bank.

Wi-Fi vs Bluetooth Hamilton’s audio solutions use Wi-Fi so it’s possible to stream to virtually every room in a property, utilising the robust network to stream to several speakers. This enables the same song to be played across all speakers simultaneously, different songs can be played in each room, or speakers can be grouped, which isn’t possible with Bluetooth technology.

Moreover, Wi-Fi offers increased audio fidelity, preserving more of what the artist intended to suit the keenest ear.

PROFESSIONAL ELECTRICIAN March 2020 59

059_PE_MAR20_Layout 1 06/02/2020 12:11 Page 60

PRODUCTS & BUSINESS SOLUTIONS

App control from smart devices Smart phones and devices mean that audio can be controlled from anywhere in the home through an App. As well as

playing music stored on the device, the Apps integrate with a range of audio platforms, such as Spotify, Apple Music and Tidal, allowing the user to play music through their preferred streaming service at the swipe of a finger.

The intuitive Hamilton Player App allows for easy set-up and control of the wireless audio solutions across a range of devices via iOS or Android. Once the system is installed, you download the App and connect to the speakers through the Wi-Fi network – playing audio is as simple as that! The App allows the system to be configured so speakers can be grouped or played singularly throughout the home for the utmost flexibility.

THE FANTASTIC FOUR: 1. WSA50 Wireless Streaming Amplifier This allows the Wi-Fi streaming of music throughout the home via the Hamilton Player App. By adding more amplifiers, you can play different music in different areas of the home, or group devices together to create sound areas. If retrofitting into a property or commercial premises, the Hamilton amplifier can be paired with both Hamilton and other branded speakers to provide a flexible option. The amplifier has a USB port to connect to audio stored on a NAS, USB flash drives and hard disks, and also has built-in

059_PE_MAR20_Layout 1 06/02/2020 12:11 Page 61

HAMILTON'S WIRELESS AUDIO RANGE Bluetooth should a Wi-Fi connection not be available. It’s recommended that the amplifier is wired in an easy-access area, such as near the property’s consumer unit, to allow use of storage devices, or to connect additional amplifiers at a later date.

2. H600-80W8 Ceiling Speakers The perfect companion to the Wireless Streaming Amplifier, Hamilton's H600-80W8 Ceiling Speakers deliver a high quality and reliable fixed audio option. The passive mono speakers contain a 6" Kevlar cone and 1" Titanium cone, delivering 80W of power and better-quality audio than speakers with built-in amplifiers. Two speakers are required for stereo sound: one for the right channel, one for the left.

3. Appio Wireless Active Wi-Fi Speaker Supporting the fixed option is Hamilton’s Appio Wireless

Active Wi-Fi Speaker, which has a built-in amplifier, delivers 20W of power and offers an EQ function to tailor the treble and bass output to the listener’s preference. It supports multi-room playback by linking multiple speakers together through the Wi-Fi, with playback having a minimal delay of less than five milliseconds. One Spotify account can stream to multiple Appio speakers simultaneously.

4. Oyster Wireless Audio Wi-Fi Receiver Completing Hamilton’s new audio offering is the Oyster Wireless Audio Wi-Fi Receiver, which

turns an existing home hi-fi into a wireless music receiver. Streaming from smart devices is made possible, while six available pre-sets allows quick and easy access to radio stations, user playlists, albums and tracks. Moreover, if a Wi-Fi network isn’t available, the Oyster can create its own hotspot for a mobile device connection.

Both the Appio speaker and Oyster Wireless Receiver can be controlled by up to six separate connected devices at the same time, supporting MP3, WMA, AAC (ACC+), Apple, Lossless, FLAC, and APE formats.

059_PE_MAR20_Layout 1 06/02/2020 12:12 Page 62

PRODUCTS & BUSINESS SOLUTIONS

Installation options and tips The wireless audio range offers several installation options to suit any project and space, whether it be a new-build property or being retrofitted into a home or commercial property.

Pairing the WSA50 Wireless Streaming Amplifier and its passive H600-80W8 Ceiling Speakers results in a high quality and reliable fixed audio option. Alternatively, the Appio wireless speaker provides a flexible and portable location audio option. Furthermore, the Oyster wireless audio receiver allows users to connect and stream music through an existing Hi-Fi system.

The WSA50 Amplifier can be installed in a ceiling or mounted on a wall or flat surface. It’s recommended that all installation steps are completed before permanently mounting. A power adaptor is included, and ideally the amp should be placed in an easily accessible place so local storage devices can be connected. However, if it is being installed within a ceiling, connect it using a switched fused spur and incorporate a USB2 Panel Mounted Socket Type A with a USB extension cable, ensuring the extension cable is fitted to the USB outlet plate and kept as short as possible.

Connect a pair of mono speakers to the amplifier, taking note to match the positive and negative terminals on the speaker. It is also possible to use the amp with other third-party speakers. For a stereo speaker, connect both right and left channels to a single speaker.

Professional installers are required to fit a fire hood to enclose ceiling speakers, which maintains the integrity of the ceiling and provides soundproofing for the rooms above.

Although this isn’t a legal requirement if a homeowner is fitting the system themselves, it’s highly recommended.

Speaker position Positioning of speakers to create the best possible audio is not as difficult as it might first seem. General rules to follow are:

62 March 2020 PROFESSIONAL ELECTRICIAN

1. Keep speakers around 60cm away from corners and other hard surfaces, such as tall cabinets, as these may reflect or hinder the sound.

For rectangular rooms of less than 30m2, two speakers placed in near opposite corners to create good sound coverage are ideal.

2. For rooms larger than 30m2 or L-shaped rooms, consider creating separate stereo audio zones using pairs of mono speakers in line with the room usage, with the addition of a single stereo input speaker within any enclosed space.

3. For long narrow rooms consider using two stereo input speakers at either end, at least 60cm in from the room ends.

Kitchen diner & entertainment spaces Ceiling speakers are an excellent solution for open plan kitchen diners and entertainment spaces, providing stereo sound throughout the space. The Appio wireless speakers can supplement the set-up, creating a very pleasant and pervasive sound field that enhances the ambience in a dining room. Placed just above seated ear level, multiple Appio speakers should be positioned in opposite corners of the room, equidistant from the central listening space to work together.

However, be aware of ceiling speaker placement above any surfaces that could disrupt the audio. For example, it’s unadvisable to position a ceiling speaker directly over a dining table because the sound will reflect off the table and could interfere with conversation.

Small spaces For a small space such as a kitchenette or utility room, single stereo ceiling speakers are an excellent solution. A single stereo input speaker plays both channels through one woofer and two tweeters. Depending on the size of the room, installing more than one speaker might be preferable: place one above the sink and one in the opposite corner to ensure good audio coverage.

These speakers also work in large awkwardly shaped rooms to supplement the main stereo speaker pairing.

Sources: * https://www.theverge.com/2019/4/29/ 18522297/spotify-100-million-users-apple-music-po dcasting-free-users-advertising-voice-speakers ** ONS – Internet Access Statistical Report (August 2019)

DOWNLOAD A SUPPORTING BROCHURE FOR THE HAMILTON WIRELESS AUDIO RANGE AT: WWW.RDR.LINK/EN020

PE Page Grid_Layout 1 07/02/2020 09:41 Page 1

064_PE_MAR20_Layout 1 06/02/2020 12:29 Page 67

PRODUCTS & BUSINESS SOLUTIONS

PROTECTIVE WEAR – DOES IT PASS THE TEST?

Peter Dumigan of Snickers Workwear takes a look at how to utilise protective clothing to ensure your safety when working in hazardous environments, and the type of testing that these types of garments should be subjected to.

I

n order for an individual piece of protective clothing to be awarded a Category III CE Certification, it has to undergo independent testing by a specialist test laboratory.

Certification results from the independent testing and subsequent validation that a product undergoes in order to comply with an approved set of performance standards.

In the case of high-risk environments where the danger of an electric arc hazard is present, the certification process examines whether or not the item – in this case protective clothing – complies with a range of regulatory requirements.

Physical testing of protective wear for electric arc hazards These physical tests employ two different test methodologies, Open Arc Tests and

64 March 2020 PROFESSIONAL ELECTRICIAN

Box Tests. Both methodologies use different test set-ups, arc configurations and types, test parameters, test procedures and result parameters.

Both tests examine the suitability and performance of the garment fabrics against the thermal hazards of an electric arc. Specifically, the tests are designed to ensure that the garments retain their integrity and are not damaged in such a way that the person wearing the garments is injured.

When an electric arc is triggered, different types of energy and risk factors are created, such as arc power, arc energy and incident energy, all of which are measured in calories. This is why calorie per square centimetre (cal/cm²) has become the unit of measurement used to establish the level of protection of a fabric or garment.

The test methodologies used by the test labs have to replicate real-life hazards and the various consequences of electric fault arcs. This includes thermal effects, electric shocks, noise, UV emissions, pressure, shrapnel, as well as the flame-retardant capacity of the clothing.

Design requirements of protective wear The IEC 61482-2 certification specifies requirements for clothing designed to protect against the thermal hazards of an electric arc. These garments belong to the Risk III category, which are certified to eliminate second-degree burns in the event of an electric arc flash (flashover).

Second-degree burns are potentially extremely painful and are usually characterised by skin blisters and vigorous swelling. There is also the risk of local infection and scarring.

064_PE_MAR20_Layout 1 06/02/2020 12:31 Page 68

The design requirements also dictate that clothing shall protect the whole body and that there should be no metal parts on either the external surface or the inside of the garment. Further still, a garment’s main seams should be sewn with flame retardant thread, tested to withstand temperatures up to 260˚C. Additionally, the outermost garment has to be flame resistant. It’s worth remembering that non-flame-resistant garments (i.e. rainwear, jackets, cold weather garments, etc.) can ignite in an electrical arc and continue to burn, negating the protective capacity of any protective clothing worn underneath.

Although still serious, second-degree burns are not the worst you could suffer, with third- and fourth-degree burns proving far more damaging. It is absolutely essential that professional electricians and anyone dealing with electricity properly protects themselves from these nasty injuries which have the potential to be life-threatening.

The garments belonging to this Risk III category include underwear, socks, gloves, underpants and t-shirts or shirts worn as a mid-layer. It’s important to remember that the more layers of electric-arc-protective clothing you wear, the higher your protection. As such, Snickers Workwear recommends dressing with appropriate base-, mid- and top-layer garments.

Wear layers to increase your protection The best way to improve your level of protection is to wear accredited base-, mid- and top-layer clothing. A fundamental requirement is of course that all the garments are certified and flame retardant.

The main and very important benefit of wearing layers is that the air gap formed between different garments provides an extra layer of increased protection. Although there is no general rating for the level of increased protection provided by the air gap between layers, Snickers Workwear has conducted a number of tests which produce some important results. The tests reveal that the air gap between layers increases protection by more than 5 cal/cm².

WHAT TO DO IN THE EVENT OF A BURN In the event of a burn to either yourself or someone else, it is essential that you seek medical advice immediately. In the meantime, however, you should seek to stop the burning happening straight away, if it continues, by removing the person from the area. Secondly, remove any clothing or jewellery but not if it is stuck to the skin. Removing clothing stuck to the skin can potentially cause more damage. You should also seek to cool the burn with cool or lukewarm water, but never use ointments or ice and ice water.

But, of course, the best way to deal with burns is to prevent them happening in the first place! So, be safe out there.

What we know for certain is that wearing multiple layers improves the protection rating. It’s therefore best to think of the air gap between each layer as extra protection that improves your chances of avoiding burns in the event of an accident.

Understand the risks – choose the right level of effective protection Working in high-risk environments involves, as the name implies, high-risk levels which are not to be underestimated. Arcs due to electrical faults can cause severe injuries and damage, so it’s vital that you choose the right protective wear to ensure your safety and well-being on site.

Snickers Workwear ProtecWork range This fully accredited and independently tested protective wear for heat and flame, electrostatic and chemical risk environments delivers leading risk-protection in a wide range of hazardous working environments. The key features and benefits of the clothing includes the hi-tech, advanced fabric technology integral to the base-, mid- and top-layer garments for both men and women that combine well with the Snickers Workwear hallmarks of durability, comfort, ergonomics and fit.

GET MORE DETAILS ABOUT THE SNICKERS PROTECWORK RANGE AT: WWW.RDR.LINK/EN021

PROFESSIONAL ELECTRICIAN March 2020 65

PE Page Grid_Layout 1 05/02/2020 10:20 Page 1

067_PE_MAR20_Layout 1 06/02/2020 12:32 Page 67

PRODUCTS & BUSINESS SOLUTIONS

BRITCLIPS’ GOT TALENT In this step-by-step guide we learn how to install electrics faster with the Britclips RSWB.

W

alraven’s RSWB (Rapid Sliding Wall Bracket) has been available for some time now, and is continuing to grow in popularity with electricians for faster fixing of electrical boxes in stud walls.

The bracket is perfect for fixing within standard stud wall divides, and now Walraven has launched a new shorter bracket (25-40cm) for non-standard stud spacing.

With two sizes available, you never need to use wooden noggins again! A box

of RSWBs will cover all your stud wall fixing needs – quickly and easily.

Installer Jordan Davies from Amigo Electrical commented: “We use the RSWB as standard now for all of our first fixing. It’s so convenient, cost-effective and is a huge time-saver.”

HOW TO INSTALL THE RSWB IN SIX EASY STEPS Step 1

Step 3

Step 5

The RSWB brackets are supplied in two connected halves. The first step is to gently bend them to snap the brackets apart.

Bend the fixing tabs at both ends and adjust the bracket to the required length for your installation. There are two brackets available: a 10-16” (2540cm) RSWB and a 16-24” (40-60cm) RSWB, depending on the joist width.

Screw into the joist with two screws through each fixing plate.

Step 4 Step 2 Slide the two halves together to form the complete bracket.

Set the bracket back into the joist at the depth required. The bracket can be placed at any depth needed. If it needs to be close to the top of the joist, the fixing plates can be bent easily along the slotted markers to sit flat on the front of the joist, or bend back inwards out of the way.

Step 6 Pre-drilled holes along the bracket allow you to screw in your electrical boxes or conduit clips quickly and easily.

REQUEST A FREE RSWB SAMPLE FROM WALRAVEN AT: WWW.RDR.LINK/EN022

PROFESSIONAL ELECTRICIAN March 2020 67

068_PE_MAR20_Layout 1 06/02/2020 12:35 Page 68

PRODUCTS & BUSINESS SOLUTIONS

UP TO THE CHALLENGE?

L

ighting technology has come a long way in the last decade.

LEDs are fast replacing conventional lighting, providing higher quality light, better energy efficiency, reduced heat, zero UV emissions and less maintenance. But the growing adoption of LED comes with its own set of challenges.

RETROFITTING The challenge Outdated, underperforming lighting can become costly to replace and maintain, and many commercial customers are now choosing to upgrade to LED technology.

Retrofitting LEDs in place of an existing lighting system can be a practical, less disruptive option than drilling new holes and fixings into a ceiling, as well as being between 50-75%

68 March 2020 PROFESSIONAL ELECTRICIAN

In this article the team at Red Arrow Electrical Distribution tackle the three main challenges contractors face with LED installations: retrofitting, dimming and flicker.

cheaper than installing an entirely new system. Yet every space has a unique lighting requirement based on occupation and access to natural light.

Finding LED solutions that fit these needs and existing optics and ceiling cut-outs can be a significant pain point for contractors.

The solution We recommend that contractors source luminaires that are specifically designed to meet the demands of retrofit applications.

These should deliver the right amount of light using existing wiring points, cover or use existing fixings and holes, emit a better quality of light, remain flexible for different types of installations, and utilise the benefits of control.

The product The Red Arrow Discus can be used in multiple retrofit applications. It features an ultra slim design and an adaptable surface mount

that adjusts for semi recessing to an existing ceiling cut out diameter of 65-205mm. Covering unsightly holes, the Discus cuts down on the cost and time of a complete ceiling refurbishment, while maintaining a quality illumination throughout.

AUTOMATED COMMERCIAL DIMMING The challenge Commercial dimming can be complicated.

When faced with complex control systems, low budgets or costly wireless controls, it’s a headache for even the most experienced contractor. But with many homes and businesses looking to lower energy costs and comply to Part L

068_PE_MAR20_Layout 1 06/02/2020 12:37 Page 69

control via a simple two-wire system, no complex programming or commissioning, and more consistent dimming for high numbers of lamps routed on a single circuit.

regulations, the demand for simple dimming is rapidly growing.

The solution Simplicity is the key to successful LED dimming. Many contractors now favour 1-10V LED dimming solutions for larger commercial projects. A mature and well-established technology, 1-10V provides a reliable, eco-friendly, cost-effective and visually consistent dimming method, offering easy

The product Red Arrow's Compact UFO High Bay is fitted with a 1-10V driver as standard and on-board dip switches and is designed to fit directly to a luminaire, removing the need for control wiring or programming. With an optical sensor, this high bay allows the contractor and end user to simply set, fit and forget, while the luminaire automatically switches and dims when the space isn’t in use.

FLICKER The challenge Installers cite flicker as their biggest challenge when installing LED, and the problem has caused so much uncertainty that many contractors have become resistant to installing the new technology.

Unfortunately, poor quality, low cost LED luminaires have tarnished the reputation of

good, well-designed LEDs. The good news is that visible flicker can be easily avoided.

The solution Use a well-established, reputable and trusted manufacturer of LED luminaires who values quality control, adopts flicker-free drivers as standard, and practices full testing and PDI processes.

The product Offering a full lighting service, the team at Red Arrow Electrical Distribution are industry experts with 60+ years’ combined experience of supplying LEDs in the UK market. And, with a new manufacturing plant in China – managed by a team of experienced supply chain and compliance specialists – the entire manufacturing process can be controlled, resulting in good quality, proven LED modules.

FIND OUT MORE ABOUT RED ARROW'S FULL LIGHTING RANGE AT: WWW.RDR.LINK/EN023

070_PE_MAR20_Layout 1 06/02/2020 12:38 Page 70

Products IN PRACTICE

sponsored by www.electricalcharity.org

Sheltered housing complex benefits from major upgrade The recent refurbishment and upgrade of a 32-bedroom sheltered housing complex at 82 Montrose Terrace, Edinburgh, included the installation of new lighting and emergency exit signs to cover the communal areas and stairways of all six floors of the building.

Products from Scolmore and ESP were selected for this retrofit project, with Scolmore’s popular Inceptor EVO bulkhead providing the lighting solution and ESP’s Duceri 2W LED maintained exit signs installed to provide the safe lighting of all exits.

Lee Rodgers, Property Officer with Trust Housing Association which is responsible for the sheltered housing complex, and was overseeing the refurbishment work, said: “As with all refurbishment projects of this nature we need to ensure we get the best value products that are easy to install, are cost-effective and cause minimal disruption to our tenants’ day to day lives. We had excellent support from Scolmore and ESP in selecting the right products for our requirements and they proved very quick and easy to install with very little work needed to restore the décor.”

It was important to Trust that its chosen manufacturer worked closely and sympathetically with them to minimise disruption and provide support with the design. Scolmore also attended contractor meetings throughout the duration of the scheme to

70 March 2020 PROFESSIONAL ELECTRICIAN

ensure that the supply chain remained intact and seamless, and to ensure a smooth delivery of the project within the tight timescales required.

A total of 20 Duceri 2W LED Emergency Exit Signs were installed, chosen for their high performance, independent testing and ease of installation. The fitting features an SMD 3528 LED lamp, with 5500K colour temperature and offers a viewing distance of 24m. They offer three hours emergency duration and have been tested to meet BS EN 60598-2-22 Standards.

At least 120 EVO Bulkhead products were fitted. These were the 17W LED Utility Bulkheads with three-hour emergency and microwave sensor option. The EVO Bulkheads offer a range of features and benefits that make them quick and easy to install.

As well as integrating the control gear and the light source within the diffuser, the bulkhead has the added benefit of a Flow plug which allows for fast and simple connection and disconnection for testing and maintenance of the luminaire.

This retrofit lighting installation project is the first of what forms part of a wider refurbishment programme which is being rolled out across all of the Trust’s housing stock.

GET MORE DETAILS AT: WWW.RDR.LINK/EN024

ADGRIDS_PE_ADGRIDS.PMM_May06 31/01/2020 10:35 Page 71

072_PE_MAR20_Layout 1 06/02/2020 12:40 Page 72

PRODUCTS & BUSINESS SOLUTIONS

A SURE THING Pete Monfort, Director of Arena Training Centre and Monty Electrics, gets to grips with the IDEAL Industries EMEA SureTrace Circuit Tracer.

M

y Mum always used to say: “Men don't grow up, their toys just get more expensive”, and how right she was, as illustrated by the excitement I felt when receiving my latest item for review – the SureTrace Circuit Tracer. Now this kit is not cheap, but I can assure you that it's worth every penny!

72 March 2020 PROFESSIONAL ELECTRICIAN

The first thing I noticed was the rugged construction of the carry case and likewise the product within. Tough moulded rubber casings and good quality plastic means this equipment is likely going to be able to endure some punishment and continue working regardless. The transmitter unit is beefy and simple to use with ON/OFF, battery warning and voltage warning lights, while the heavier battery unit comes with a

convenient strap. I found the receiver was easy to use and I liked how the screen automatically rotated regardless of the orientation – this is particularly useful when working in confined spaces.

072_PE_MAR20_Layout 1 06/02/2020 12:40 Page 73

Initially I decided to test the kit on circuits that were known to myself, so the Arena Training Centre basically became a test facility! Starting with the ‘Breaker Find’ function I did my best to fool this bit of kit but it gave a clear indication on every circuit I used, picking out the circuit breaker on the live circuit each time and even indicating which distribution board contained my breaker with a simple scan of the DB panel’s face. In fact, its accuracy was so impressive it was able to differentiate between two ring circuits that happen to be wired almost in parallel.

Anyone carrying out EICRs commercially will find this function immensely useful since it enabled quick and accurate identification of circuits.

Next I tried the ‘Cable Tracing’ function.

I owned a rather cheap unit previously – which was very inconsistent – so I was a bit sceptical about how well the SureTrace would work in this area. Once again, it

proved to be very accurate. When testing on cables run in deep trunking, I could pick out where the cable was sitting within the trunking. Steel conduit couldn’t fool this little device and even dead circuits could be traced by picking up an earth path with a crocodile clip and fly lead.

The ‘Cable ID’ function was up next, and I actually used this on a paying job. Having had my team pull in 20 network feeds they had (very helpfully) failed to label any of the cables – a potential nightmare. Not so with the SureTrace though, as by connecting the cable ends to the transmitter in the tracer and a local earthed point for a return path, the receiver picked the unknown end out from the bundle with a clear indication. A full bundle of 20 cables was identified in two minutes.

The ‘Open Circuit’ function was also excellent. To test this, I asked one of my students to disconnect a line conductor from one of the test rigs at the college.

Initially I struggled to get the circuit finder to reveal the location of the open circuit but, after re-reading the instructions and understanding how the equipment actually works, I eliminated the problem of capacitive coupling. Repeating the search picked out the disconnection on the first sweep with pinpoint accuracy.

While I was at it, I also had a play with the inductive clamp which induces a signal into a circuit (or even metal conduit) and allows the tracing of live circuits. This is a useful feature given that customers do like to demand that equipment isn’t switched off for testing. I actually used this

on a test at my own property with a bank of sockets that were not marked up and lacking adequate labelling. The clamp introduced a signal which was clearly discernible and allowed the socket faces to be quickly identified across two circuits.

The conduit tracer worked too, and a length of metal conduit was set up in our training centre and covered in boards to see if we could detect the path of conduit through a thick layer of timber. The sensitivity was such that the exact route could be chalked out on the timber panels, something that hugely impressed all those observing.

Overall, I found this device to be extremely useful and I feel as if I’ve only really scratched the surface in terms of its scope of use. You do need to take some time to play with it, understand it and get a feel for how it works, and I found that reducing the unit’s sensitivity regularly would achieve really clear indications. Of course, the spare sensitivity means it will still work in more arduous circumstances but, nevertheless, it took a short while to get the hang of it.

My opinion is that any electrician undertaking EICRs – from domestic to commercial – would seriously benefit from owning this product and I can assure you that it would quickly pay back the initial outlay on purchase. It gets top marks from me!

WATCH A SURETRACE DEMONSTRATION VIDEO AT: WWW.RDR.LINK/EN025

PROFESSIONAL ELECTRICIAN March 2020 73

ADGRIDS_PE_ADGRIDS.PMM_May06 31/01/2020 09:50 Page 74

075_PE_MAR20_Layout 1 06/02/2020 12:57 Page 75

Products round up

XCITE FRD MINI Downlight

SNICKERS WORKWEAR LiteWork Stretch Trousers Snickers Workwear’s hi-tech fabrics and body-mapping designs give plenty of scope for every professional craftsman and woman to comfortably perform to their best ability. Designed for a wide variety of jobs on site, these LiteWork 4-way stretch work trousers are the ideal choice if you’re working hard in a warmer environment. For maximum flexibility in getting work done, these new trousers feature detachable holster pockets while the trousers themselves are made from full-stretch material for maximum mobility wherever you’re working. The Cordura-reinforced Kneeguard pockets offer further additional comfort and protection.

DOWNLOAD THE 2020 CATALOGUE AT: WWW.RDR.LINK/EN026

The latest product offering from xcite boasts excellent energy savings, exceptional customisation and outstanding uniform light levels when installed.

The new unit complements the existing downlight range and carries all the key features that you would expect to find on a fire rated downlight. These include an unrivalled dimming function with a large range of compatible dimmers, a wide 60˚ beam angle distribution and IP65 protection. Ideal for both residential and commercial spaces the FRD MINI is fully fire rated to 30/60/90 minute certification. Featuring a large loop in/out mains connection, combined with being fully insulation coverable, this quick and easy to fit recessed fitting is built with installers in mind. The product is available in a choice of two colour temperatures – warm white (3000K) and neutral white (4000K) – with a choice of three fixed coloured bezels – white, polished chrome and satin nickel. The FRD MINI achieves a lumen efficacy of up to 90lm/W and a lifetime of 30,000hrs, backed with a three-year warranty.

DOWNLOAD A PRODUCT LEAFLET AT: WWW.RDR.LINK/EN027

CED ELECTRICAL GROUP Axiom Garage & Shower Units The Axiom brand from the CED Electrical Group boasts a comprehensive range of Metal Consumer Units including high integrity boards with a 100A/DP switch and dual RCD, a package of up to 22 free way boards with mains switch or 80A RCD, plus split load boards with mains switch, 80A RCD or both. And finally, there are fully loaded 8, 12 and 18 way boards as well as Garage and Shower Units. Garage Unit options include 3 and 4 way boards with the Shower Unit also 3 way – all pre-fitted with an MCB and 63A RCD. Amendment 3 compliant, this range has been designed for ease of installation while offering a stylish contemporary finish. Quality is assured with RoHS compliance and certification to BS EN61439-3.

GET MORE DETAILS AT: WWW.RDR.LINK/EN028

HUDSON LIGHTING WISKA SWA Mount Topper Hudson Lighting has launched an innovative product for mounting WISKA boxes with SWA terminations – the WISKA SWA mount topper. The spikes come complete with fixing hardware and allow WISKA’s 108, 116 and 308 ranges to be mounted vertically for use for outdoor lighting and speaker installations. The product also has two cable tie loops to secure SWA cables in place. Previously, outdoor boxes were either mounted to a wall, left loose in the ground or the installer would have to cut down and install a wooden stake. This new spike topper is designed around WISKA’s range of boxes, marrying perfectly with their fixing holes and bracket with the perfect height for SWA gland termination. Manufactured from PLA and using 3D printing technology, the spikes are eco-friendly whilst remaining robust.

GET MORE PRODUCT DETAILS AT: WWW.RDR.LINK/EN029 PROFESSIONAL ELECTRICIAN March 2020 75

075_PE_MAR20_Layout 1 06/02/2020 12:59 Page 76

Products round up

Is this life-saving device in your toolbox?

Arc Fault Detection Devices (AFDDs) might be new to the UK wiring regulations, but that doesn’t mean they’re not of crucial importance. In a recent survey on the technology, the majority of respondents agreed that AFDDs can help to prevent electrical fires.

The 18th Edition outlines the need to protect against the dangers of high temperatures, arcing, burning and ignition of fire. AFDDs conforming to BS EN 62606 are recommended as a means of providing additional protection against fire caused by arc faults in AC final circuits.

Wylex’s smallest ever AFDD detects and disconnects arc faults to prevent electrical fires. It also does the job of both a miniature circuit breaker (MCB) and a residual current device (RCD). Furthermore, it’s able to detect the arc faults that these devices simply can’t. AFDDs have been tested using the same process that brought about RCDs and RCBOs. This process is robust and recognised by British, European and International electrical standards organisations.

The product standard (BS EN 62606) includes a range of tests to ensure that AFDDs will not respond to expected “operational sparking” which occurs in equipment such as vacuum cleaners and washing machines. Meanwhile, AFDDs also detect dangerous arcing faults on ring circuits, spurs, radials and leads relating to mode connection.

However, if a ring circuit is broken, the ring becomes two radial circuits that are at the same electrical potential. The power flows both ways and there is no arc. No arc means no arc fault, which in turn means no trip. Wylex AFDDs can also be retrofitted in the majority of cases. It should be noted that, if the Wylex balcony-style busbar is used, the interior of the consumer unit will need to be changed in some cases.

DOWNLOAD THE WYLEX AFDD BROCHURE AT: WWW.RDR.LINK/EN030

76 March 2020 PROFESSIONAL ELECTRICIAN

075_PE_MAR20_Layout 1 06/02/2020 13:00 Page 77

AICO Ei1000G SmartLINK Gateway

ESP Aperta Door Entry Range Expansion

Aico’s Ei1000G SmartLink Gateway provides full visibility and remote whole system monitoring of Aico Fire and Carbon Monoxide alarm systems, allowing Registered Social Landlords (RSLs) to have access to real-time data insight into the status of the alarm systems across their entire housing stock. Using its built-in GSM data connection, the Ei1000G reports events, including fire/CO activations and alarm head removals, as they happen to the SmartLINK cloud portal, for full visibility and remote monitoring. The Ei1000G SmartLINK Gateway utilises Aico’s next generation of wireless technology to enable real-time notifications via an online, cloud-based SmartLINK portal system. It further aims to improve efficiency, reduce costs, aid with replacement forecasting and maintenance and enable smart asset management.

ESP is expanding one of its best-selling products – the Aperta EZTAG door entry system – to offer more choice for installers.

Offering straightforward installation and commissioning with simple self-contained programming, the EZTAG3 is an IP65-rated weatherproof combined access control keypad with proximity tag or pin code activation, accommodating up to 1,010 key tag holders or pin numbers. Users approach the keypad and enter a four digit code or hold a personal proximity tag within a few inches to activate one of the EZTAG3’s two on board relays which activates a door release in separate controlled areas. The EZTAG3 supports two separate lock outputs, as well as fail safe and fail secure locks. It comes complete with 10 tags and features a robust housing with a narrow (45mm x 152mm) footprint allowing installation where space is tight. A new black keypad is also being introduced for the EZTAG3PRO Kit, which offers a complete door entry system in one handy and convenient box.

GET MORE DETAILS AT: WWW.RDR.LINK/EN031

GET MORE DETAILS AT: WWW.RDR.LINK/EN032

075_PE_MAR20_Layout 1 06/02/2020 13:00 Page 78

Products round up

Take action – before an intruder breaks in The Netatmo Smart Alarm System with Camera integrates the brand’s Smart Indoor Camera, Smart Door and Window Sensors and Smart Indoor Siren into one system, allowing end-users to take action – even before an intruder breaks in. Smart Door and Window Sensors can tell if someone has tried to break in and will send a notification to a customer’s smartphone via the Security App. The user can then simply set off the 110db Smart Indoor Siren via their smartphone. If someone manages to break into the home then the Smart Indoor Camera detects the intruder using facial recognition and sends a notification with video footage to the smartphone, before the Smart Indoor Siren immediately sets off its alarm to scare the intruder away.

The Indoor Security Solution has no hidden costs – all alarm systems features with videos and their storage are fully accessible without subscription, while App updates and additions are free of charge. Forget about false alarms – the system uses facial recognition and specific settings for the Smart Door and Window Sensors to ensure only useful alerts are received. The Smart Indoor Siren will only go off if a real intruder is detected. The Smart Indoor Camera is also compatible with Amazon Alexa, Apple Homekit and Google Assistant.

SEE HOW IT WORKS AND VIEW A PROMOTIONAL VIDEO AT: WWW.RDR.LINK/EN033

78 March 2020 PROFESSIONAL ELECTRICIAN

075_PE_MAR20_Layout 1 06/02/2020 13:01 Page 79

SELECT ‘By Your Side’ Brochure SCOLMORE GridPro Range Part M Additions The latest development of Scolmore’s range of solutions sees the expansion of the GridPro range of interchangeable mounting plates and modules to include Part M frontplates. The new additions comprise 1-4 gang standard switch plates. One of the key features of the GridPro design is the fact that there is no requirement for a yoke with the 1-4 gang frontplates – the modules are secured to the back of the GridPro frontplates via the screw feature on the modules, allowing installers to use standard back boxes. These new frontplates join the growing Part M range which also comprises 1-gang, 2-gang and 3-gang wide rockers. With ease of visibility in mind, these wide rockers are an ideal choice for assisted living installations and to aid with Part M compliance. Completing the Part M line-up is the locating plug socket which is designed to assist people with impaired vision or poor hand-eye coordination to more easily insert a plug into a socket.

DOWNLOAD THE PRODUCT CATALOGUE AT: WWW.RDR.LINK/EN034

A new brochure has been produced that explains some of the vital work that SELECT carries out behind the scenes.

The publication, ‘By Your Side’, outlines the many different ways that Scotland’s biggest trade association works to help improve the electrical landscape for both its members and the wider industry. It reveals how SELECT is a tireless campaigner for regulation, presses for payment change and carries out political lobbying in Scotland and beyond. It also explains the vital work the association does to raise industry standards, improve working conditions and aid skills development by building relationships and serving on respected industry bodies.

VIEW A DIGITAL COPY AT: WWW.RDR.LINK/EN035

075_PE_MAR20_Layout 1 06/02/2020 13:01 Page 80

Products round up

UNICRIMP Lever Connectors

HELLBERG SAFETY SAFE Protection Range Hellberg’s SAFE face protection range offers visor solutions to suit a variety of different internal and external work environments. With a standard product design across all the products, the visors and carriers can be combined with hearing protectors and safety helmets for more complete solutions, or be used as individual visor solutions. These stylish products give you multiple options that all fit perfectly together. Everything is well made, comfortable to wear and delivers superb, practical protection for the hazards you’re likely to face – whatever job you’re doing.

DOWNLOAD THE PRODUCT CATALOGUE AT: WWW.RDR.LINK/EN036

Unicrimp continues to expand its cable accessories portfolio with the addition of a new range of Lever Connectors. Suitable for solid, stranded and flexible cable types, these new Q-Crimp reusable lever operated connectors use screw-less spring clamp technology, which means there is no need for any tools and that, in turn, will lead to quicker and easier installation. There are three connectors available – 2 port, 3 port and 5 port – each featuring a test slot which allows the installer to safely test connection with a voltage tester. Wire connectors are an essential part of an installer’s tool kit and will be used on a range of applications including lighting, power, control circuits, alarms and heating and ventilation. Unicrimp’s new lever connectors offer installers the benefits of being fast and easy to use, maintenance-free installation, permanent secure connections and a conductor range from 0.2 - 4mm. They feature transparent housing and an inspection window for easy testing. Because they’re reusable, they’re the perfect solution for temporary or mobile installations.

DOWNLOAD THE UNICRIMP CATALOGUE AT: WWW.RDR.LINK/EN037

FLUKE TiS20+ Thermal Imaging Camera

CHAUVIN ARNOUX CA6418 Earth Clamp

Fluke has introduced the TiS20+ entry-level thermal imaging camera – the ideal troubleshooting tool for electricians, first line industrial maintenance and HVACR technicians. Fluke IR-Fusion makes the job easier by using a thermal image overlaid on a visual light image to give the full picture of where the issue is before it becomes a problem. Featuring a 3.5” touchscreen – for use in a temperature range of -20°C to +150°C – it is designed to withstand a two-metre drop and is water and dust resistant to IP54, while boasting the longest ever battery life in a Fluke thermal camera (over five hours of continuous use).

The TiS20+ is compatible with Fluke Connect, allowing users to record and share thermal images in real time via their smartphones or tablets. Fluke Connect desktop software enables creation of professional reports in minutes while efficiently capturing full radiometric data.

Chauvin Arnoux has launched its first earth clamp with an oblong head for testing earth resistance in multi-earth installations. The new CA6418 earth clamp comes with a carry case and calibration shunt and is ideal for quick testing of 30 x 40mm or 20 x 55mm rectangular earth bars and cables up to 32mm diameter. Ergonomically designed, with features such as an OLED display ensuring 180˚ visibility in all lighting conditions, the CA6418 clamp displays the earth resistance and leakage current. An automatic ‘pre-Hold’ mode when the clamp is opened, and automatic compensation of the jaw gap when powering up ensure optimised processing of the measurements provided by the CA6418. The clamp meter provides earth resistance measurement from 0.01 to 1,200 Ω and current measurements from 0.5mA to 20A. There is an automatic hold of the display when the clamp is opened, and other features include an automatic calibration of the jaw gap and recalibration is also possible without returning to factory settings.

DOWNLOAD A TECHNICAL DATA SHEET AT: WWW.RDR.LINK/EN038 80 March 2020 PROFESSIONAL ELECTRICIAN

DOWNLOAD A PRODUCT LEAFLET AT: WWW.RDR.LINK/EN039

081_PE_MAR20_Layout 1 06/02/2020 13:04 Page 81

PRIZE DRAW

W IN

WIN A HULTAFORS TOOLS SNAP OFF KNIFE!

We have 10 to give away this month.

T

he new SRP Snap-Off Knife from Hultafors Tools is an ergonomic robust knife, ideal for cutting materials like plasterboard, insulation, aqua panels and wood. Designed with a rubberised grip to make it suitable for cutting materials that need more power, it’s also tapered for control and a better view of the cutting area.

It can hold a dispenser that takes three blades and is made of durable polycarbonate plastic with a steel core for added stability. There’s a 1mm thick blade rail for additional stability and its overall symmetric design makes it ideal for left or right-hand use. It also comes with a set of replacement blades.

ENTER THE FREE PRIZE DRAW AT: WWW.RDR.LINK/EN040 Deadline for entries: 10/04/2020. Usual T&Cs apply.

075_PE_MAR20_Layout 1 06/02/2020 13:07 Page 82

Products round up

OVIA adds emergency lighting range It is just three months since OVIA was officially launched as an independent lighting company and the first phase of lighting products – more than 400 individual lines – hit the marketplace.

Now the company is ready to take the wraps off an additional new range of products with the launch of the OVIA Emergency Lighting collection.

OVIA’s aim is to bring to market a vastly extended range of high quality products that are very competitively priced. The new emergency lighting collection joins the domestic, commercial, industrial, utility, amenity and floodlighting products already available, bringing to the professional contractor market one of the most extensive ranges of lighting products from under one roof.

A total of 60 individual products make up this new collection, providing a variety of products for the end user, and they fall broadly under the following categories – Bulkheads, Exit Boxes, Downlights, Twin Spots, Surface/Suspended Exit Signs and SelfTest and Non-Self-Test Emergency Lighting. There is also a range of accessories which includes battery replacements, wall brackets, adhesive legends and flush mounting kits.

As well as being highly competitive, the range has been designed to offer speedy and low cost installation as well as low cost maintenance. The complete range of OVIA emergency lighting products and batteries are supplied with a four year warranty. Through the OVIA Lighting Design Service, customers can have free access to emergency lighting designs for their commercial projects.

Mike Collins, OVIA Sales Director, comments: “We’re thrilled to have been able to add this comprehensive emergency lighting range to the OVIA collection in such a short time. There are lots of

82 March 2020 PROFESSIONAL ELECTRICIAN

great features and benefits for the end user by way of the variety of products and extended warranties. We’re particularly excited about the new Inceptor Hulke fitting and think this will be a stand-out product with installers. It’s an Emergency LED Maintained Bulkhead that features a hinged lid which will facilitate quicker and easier installation. This in turn means an overall reduction in the time taken to fit the product.“ WATCH A PROMOTIONAL VIDEO AT: WWW.RDR.LINK/EN041

075_PE_MAR20_Layout 1 06/02/2020 13:11 Page 83

DICKIES Winter Jackets Dickies has added two new jackets to its range this season, both ideal for tradespeople who work outside throughout the year. Padded for warmth, the Dickies Winter Softshell Jacket features stretch fabric for ease of movement – allowing the wearer to stay warm without the restrictive, bulky feel of some winter jackets. Easy to embroider with company logos, the jacket is available in six colour-ways, making it simple to coordinate as part of a uniform. Also new this season is the Dickies Winter Jacket, which benefits from quilted lining for added warmth on particularly cold days, plus a fleece-lined chin guard for extra comfort. Both jackets are waterproof and breathable and include reflective details, plus adjustable cuffs and hems to retain warmth.

GET MORE DETAILS AT: WWW.RDR.LINK/EN042

AURORA BatPacPRO LED Batten When advising customers to replace single or twin fluorescent fittings you can’t go wrong with this new high performance, robust, energy saving LED batten. Designed with the installer in mind, it is extremely energy efficient, offers a fast ROI, and is incredibly fast and simple to install. With a simple clip-on diffuser, clip in gear tray, push fit terminals as well as multiple BESA entry points that match traditional fluorescents and knockouts at either end, the BatPacPRO can be a direct replacement for single or twin fluorescent fittings, both in size and output, but with 40% of the energy savings, whilst delivering up to 121lm/W. With the option to suspend or surface-mount the battens, using standing fixings and an IK rating of 08, this range is suitable for a wide variety of applications where reliability and robustness is required.

DOWNLOAD THE 2020 TRADE BROCHURE AT: WWW.RDR.LINK/EN043

075_PE_MAR20_Layout 1 06/02/2020 13:12 Page 84

Products round up

STIEBEL ELTRON Compact Water Heaters HB42 Eco-Foil Starter Packs Hilton Banks has launched the HB42 All-in-One ‘Eco-Foils’ Starter Pack, including three Eco-Foils and a Sealant Gun, removing the environmental problem of disposing of the single use plastic cartridge normally associated with these types of products. The HB42 All-in-One 400ml Eco-Foils produce 95% less waste than the single use tubes, while users get 38% more sealant than in the 290ml plastic tube. HB42 All-in-One seals, sticks and fills, can be over-painted and works in wet conditions. It is low in VOCs and bonds to almost anything while also being food safe, fully curing in 24 hours. It is estimated that over two-million single use plastic cartridges are put into landfill every week in the UK. For sealant users looking to reduce their waste without compromising the strength of the products they choose, the HB42 All-in-One foils are the right choice.

WATCH A PRODUCT VIDEO AT: WWW.RDR.LINK/EN044

Stiebel Eltron has launched two new compact instantaneous electric water heaters in its DCE range to the UK market. The DCE-X Premium offers users temperatures which can be set between 20 and 60˚C in 0.5˚C intervals. The system also has two memory keys installed so that it can remember frequently used temperature settings and activate an ‘eco’ mode which offers increased energy efficiency, giving users complete control over their heating preferences and energy bills. Each unit is held within a space-saving housing and has been designed with rapid installation technology, making it the ideal solution to high-density, city-centre developments in which space is at a premium. The range also includes the DCE-S Plus which offers economical hot water and high energy efficiency for both residential and commercial use.

DOWNLOAD A TECHNICAL DATA SHEET AT: WWW.RDR.LINK/EN045

075_PE_MAR20_Layout 1 06/02/2020 13:13 Page 85

SWITCHTEC Enclosed Switch Disconnectors Switchtec’s NT enclosed switch disconnectors offer improved performance at a competitive price and are now being supplied in either GRP or Mild Steel enclosures. Aimed at electrical contractors, panel builders, equipment manufacturers, machine builders and generator set manufacturers, the switch disconnectors provide a solution where general switching duties are required. Three types of enclosed switch are available: on/off load break, on/off switch fuses and on/off/on change over switches. Supplied in enclosures with lots of internal space, it is much easier for installers and maintenance staff to handle and bend powerful, stiff cables to terminate them at the unit’s connection terminals.

The NT enclosed switch disconnectors are supplied in either an IP65 GRP enclosure or an IP65 Mild Steel enclosure. The new GRP enclosures are IP65, RAL 7035, pale grey and offer additional benefits to the Mild Steel, such as IK10 impact rating, high resistance to harsh environments, lighter in weight, and non-conductive material double insulated.

DOWNLOAD A RANGE CATALOGUE AT: WWW.RDR.LINK/EN046

HIKOKI POWER TOOLS ‘Hi5’ Five Year Warranty HiKOKI Power Tools has announced its Hi5 five year extended warranty on its 18V and 36V (Multi Volt) brushless and cordless ranges. The Hi5 warranty scheme covers cordless and brushless tools in its powerful 18V and 36V (Multi Volt) ranges. To secure the Hi5 warranty all you have to do is register the cordless and/or brushless power tools for an extra two years over the already automatic three years from the Heavy Duty three year warranty. Batteries 5.0Ah and over are covered, as well as Multi Volt batteries. In addition to 18V tools, the Hi5 Warranty will apply to HiKOKI’s Multi Volt range.

DOWNLOAD A RANGE CATALOGUE AT: WWW.RDR.LINK/EN047

075_PE_MAR20_Layout 1 06/02/2020 13:19 Page 86

Products round up

Prota plug-in rose is ideal for ‘ceiling’ the deal Available from flex7 is the world’s first 3-7 pole ‘decorative’ plug-in ceiling rose. Incorporating the trusted flex7 plug and socket interface, Prota is ideal for surface installations where final connection to the luminaire has to be aesthetically pleasing. The unit is available in 3,4,5,6 and 7-pole options and can be used for on/off, dimming, or specialised lighting applications.

The pluggable connection means that luminaires can be connected and disconnected under load. The socket mounts straight onto any standard BESA box, and has large capacity terminals, which easily accept 5 x 1.50mm² conductors. The cleverly designed side-facing terminals are easily accessible for test equipment probes. There’s no need to pull the socket away from the BESA box and no need to disturb the fixed wiring – simply remove the socket cover to access.

To make wiring the plug-in ceiling rose socket as easy as possible, it has been designed to sit flush with the BESA box. As a result there is no back projection into the BESA box, and wiring space is maximised, which reduces the risk of trapping or stressing conductors as the socket is secured.

The socket fits onto any standard BESA box. The plug latches into place with a satisfying ‘click’ and the decorative cover, secured with a simple quarter twist, provides the finishing touch.

For installer convenience, flex7 supplies popular Prota parts in kit form. Kits comprise a socket, a luminaire lead and a decorative cover, while an extensive range of luminaire leads to minimise installation time are also available. All variants are available in Low Smoke Halogen Free (LSHF) cable, in accordance with BS EN 50525-3-11 and CPR rated to category Cca, so you can be assured they’ll meet required safety standards for public and commercial buildings.

86 March 2020 PROFESSIONAL ELECTRICIAN

REQUEST A PROTA SAMPLE AT: WWW.RDR.LINK/EN048

075_PE_MAR20_Layout 1 06/02/2020 13:19 Page 87

Lighten your workload with C.K Magma Set to be a firm favourite with professionals whose work requires them to regularly transport a heavy toolkit, C.K Magma’s new Technician’s PRO Wheeled Case (MA2652) fits the bill perfectly, combining great features and benefits to make every task that much easier.

Ideal for all terrain use, this innovative wheeled case offers more storage than ever before and will effortlessly transport a fully laden toolkit which, with test equipment and power tools, can top 20kg.

With back problems a significant cause of loss of working days for all trades, the C.K Magma Technician’s PRO Wheeled Case has been designed to take the strain, providing quick and easy transportation of a heavy toolkit to any location.

The unit offers a fantastic range of features and benefits.

Its balanced design includes a rugged and durable chassis, wheels and a telescopic handle, ideal for effortless movement of larger toolkits, test equipment and power tools, whether on a factory site or commercial premises.

Extra storage now includes 50 pockets/compartments, with handy vertical pockets for clear visibility and organisation of tools, with other quality features including: adjustable straps for easier access to main pocket compartment; lockable zip system for extra security; an extra wide main compartment with a red lining for high visibility; a hard protective divider between tools and test equipment; and a zip down front panel for A4 document storage.

WATCH A PROMOTIONAL VIDEO AT: WWW.RDR.LINK/EN049

088_PE_MAR20_Layout 1 06/02/2020 13:23 Page 110

Did you know...

C-TEC’s new HAK/1 Hush-ActiV Grade C domestic fire alarm kit is now available?

Designed to lift the level of fire protection in flats, apartments and other residential dwellings, the kit includes everything you need to create a typical LD2 fire alarm system to BS 5839-6 (2019).

Key features include an attractive Central Controller with accessible HUSH and TEST buttons, comprehensive monitoring of open circuit, short circuit, battery and power supply faults and only one rechargeable 72 hour standby battery for the entire system.

Manufactured by C-TEC in the UK, the fact the Controller's HUSH and TEST buttons can be operated whilst standing at floor level also helps facilitate full compliance with the Equality Act.

HAK/1 Hush ActiV BS5839-6 Grade C Domestic Fire Alarm Kits

HAK/1 Kit co contents ontents

Lounge Kitchen

1 x Hush-ActiV Controller c/w 72 hour standby battery

Bedroom Bathroom Supply

Supply

TEST

Fault

Alarm

Hushed

HUSH

www.c-tec.com

M

GETtoMORE DETAILS PRODUCTS WWW.RDR.LINK/EN050 Want find out moreABOUT aboutC-TEC’S C-TEC’s productsAT: and services? Readerlink XXX

A PROUD BRITISH A

NU

ER

sed be u ation n a C u D y sit in an e Grade larms r whe attery A d /B ifie s n Mai are spec

1 x 230V/24V 250mA 250m mA A PSU 1 x ActiV multi-sensor 1 x ActiV smoke detector 1 x ActiV heat detector 3 x ActiV detector bases 1 x ActiV base sounder c/w lid

FA C T U

R

089_PE_MAR20_Layout 1 06/02/2020 13:25 Page 89

DIGITAL DIGEST

APP-LY YOURSELF TO WIFI THAT WORKS With thousands of Apps now available to end-users, how do you know which ones to trust and what are some of the major challenges that App producers face on an ongoing basis? The team at Timeguard tell us more. ho are most boring in the pub?

The people talking about the price of their house or the ones that whip out their phone and tell you how they're just turning the heating up at home or checking the webcam? It’s a close-run thing, isn’t it? Admit it, who doesn’t love it when the set-up fails and their friend is left prodding the touch screen manically?

When this happens, especially in a relatively new installation, it’s probably a router (or hub) problem on their home network (something that you as an installer can't be held accountable for), or a bug in the App. If it’s the App that has failed, then the customer perceives the whole installation to be a dud – and for that they will lay the blame squarely at your door.

W

So why do Apps let us down at times?

Perhaps the fact that they’re generally free to download from the App stores gives us the wrong perception of how much time and money goes into development and how they need to be maintained. Ongoing App maintenance is important: suppliers can’t just buy in some developer time, upload to the online stores and forget about them: there will be bugs to find and fix and there will have to be updates to keep up with new releases of handset operating system software. A rule of thumb is that maintenance is probably going to cost around 20% of what is probably already a six-figure development cost, even for a fairly simple App. So, before you buy, be sure you can trust the manufacturer to be making that long-term investment.

Of course, the number of bugs can be minimised by really rigorous testing before launch, but no one believes that there will ever be the perfect piece of software, so constant testing and checking is needed.

De-bugging is time-consuming, even using automated software tools: just finding the right lines of code within the hundreds of thousands of lines within even a basic App is a challenge!

PROFESSIONAL ELECTRICIAN March 2020 89

089_PE_MAR20_Layout 1 06/02/2020 13:26 Page 90

DIGITAL DIGEST

Another approach to avoiding bugs is to keep the App fairly simple – a clean interface delivering the functionality that users really need, without unnecessary bells and whistles. After all, it's said that 45% of App features aren't used anyway.

But don’t confuse simplicity and focus with just rushing to market with an unfinished light version of the App to try and steal a march on the competition, and then relying on adding patches later – that’s just going to create more software bugs!

“With our WiFi Apps we didn’t rush, despite the sales team champing at the bit, and we deliberately avoided commissioning unnecessary features,” says Timeguard's Technical Manager, Peter Staniforth. “After all, we're selling reliable time control, not fancy software!

“We've successfully put WiFi control into a single gang unit that also

incorporates used spur protection. So, wherever you already have a spur, you have the option to add WiFi control with no extra wiring. All the App screen animations or features in the world won’t improve on that as a superb sales proposition for installers!”

Even if a project or product manager has minimised the need for frequent functional updates by focussing on the essentials, there is an ongoing need to update Apps, not least because device operating systems change. Also, no matter how near perfect an App is, some of the inevitable customer feedback can't be ignored. Every change is a chance for new bugs to creep in and publishing an App is an ongoing process that simply can’t be done on the cheap.

Our advice is to choose WiFi controlled devices from trusted brand names that

won’t let your customers down. Be sure to introduce them to Apps that can be downloaded from the mainstream App stores, Google Play or the App Store, which will be subject to initial checks and also every time a change is made.

Looking ahead, tech industry forecasters tell us that more developers will choose to build web applications rather than Apps that you download onto your phones, making it easier to test, debug and add new features. In our industry, though, the same principles will apply: a) Do you trust the manufacturer? b) Is it easy to use? and c) Does the device it controls do the right job for the customer?

DOWNLOAD THE TIMEGUARD PRODUCT CATALOGUE AT: WWW.RDR.LINK/EN051

ADGRIDS_PE_ADGRIDS.PMM_May06 06/02/2020 10:56 Page 91

Full Page filler 05/05/2017 10:39 Page 1

093_PE_MAR20_Layout 1 06/02/2020 14:30 Page 93

DIGITAL ROUND-UP

V-TAC unveils redesigned website V-TAC, a leading LED lighting solutions provider, has recently launched a redesign of its website.

The new site aims to provide visitors with a more engaging user experience and better access to the company’s catalogue, blog, case studies, and services.

The redesigned e-commerce platform is a first for the industry. V-TAC worked closely with primary stakeholders to develop a personalised platform for customers to stock up, compare products and prices, and engage with the company.

Of the company’s launch, Dinesh Sajnani, V-TAC CEO, said: “At V-TAC, we constantly strive to innovate and expand our catalogue and services. Our next step was innovating the purchasing experience and providing an all-inclusive B2B platform that keeps the customer in control from the beginning (product browsing) through to the end (shipping) of the process.”

The redesigned website is part of V-TAC’s strategy to serve the growing needs of today’s traders and support electricians. The company blog page is online too and is constantly updated with the latest industry news and announcements.

VISIT THE NEW V-TAC SITE AT: WWW.RDR.LINK/EN052

C-TEC paper is ‘white hot’ Aimed at professionals working in the installation and maintenance of fire safety systems, C-TEC has released a new white paper that is free to download from the company’s website.

'Problems with, and solutions to, the interconnection of domestic and commercial fire systems in multiple occupancy dwellings and apartment blocks' sets out a bold new vision for a combined commercial and domestic fire alarm solution that better protects people and serves as a failsafe ‘Plan B’ solution should ‘Stay Put’ be compromised.

DOWNLOAD THE WHITE PAPER AT: WWW.RDR.LINK/EN053

PROFESSIONAL ELECTRICIAN March 2020 93

093_PE_MAR20_Layout 1 06/02/2020 14:31 Page 94

digital round-up

£100 to be won with Scolmore Group App Scolmore has updated its award-winning App to incorporate all the businesses within the overall Scolmore Group.

This will extend the access for users from Click Scolmore to the full range of products and services for ESP fire and security, OVIA lighting and Unicrimp cable accessories – with just one click.

To celebrate the launch of the new Group App, Scolmore is launching a special promotion which will see a multistore voucher worth £100 up for grabs each month. To be in with a chance of winning, contractors just need to download the new Scolmore Group App and click the ‘Win’ tab where all the details required will be visible. One winner will then be drawn at random each month for the rest of 2020.

The award-winning Scolmore Group App brings to contractors the most comprehensive range of features that will help them in their everyday tasks on site. The company has used feedback from electricians/contractors to ensure that the free App works to save them time and money.

One significant feature is the ‘Tool Kit’ option, which includes a selection of valuable calculators, designed to make it quick and easy for electricians to make essential calculations on the job.

Included are: Zs values; Cable Selection and Voltage Drop;

Power Factor; KVA Convertor; Cost Saving Calculator; Downlights Number Calculator; Resistance Calculator; Voltage Calculator; Current Calculator and Power Calculator.

The new App also offers two new additional calculators within the OVIA Lighting section – one to calculate the recommended amount of lighting products required to achieve the optimum lighting level, as well as a Lighting Cost Saving Calculator.

Free to download, the App features a complete range of searchable products across all the group companies, plus product and tutorial videos, catalogue downloads and all the latest news and events to keep users up-to-date with what’s happening in the company and the industry.

DOWNLOAD THE APP FOR IOS AT: WWW.RDR.LINK/EN054 DOWNLOAD THE APP FOR ANDROID AT: WWW.RDR.LINK/EN055

Gira releases Smart Home KNX video Gira has unveiled a new video highlighting the benefits of installing a KNX Smart Home by Gira: Smart Building Technology.

The video is a great resource for luxury specifiers, architects, designers and installers who want to demonstrate how, with the help of Gira, they can enhance all aspects of their customers’ project. With KNX, all isolated devices or systems are able to talk to each other and can be controlled through just one central system over multiple control centres.

Mark Booth, Managing Director at Gira UK, says: “Everyone seems to know the term ‘smart home’, yet the mainstream is still grappling with the true meaning of this ever-expanding market. There are technically two options for intelligent build specification – isolated and system solutions – however, as the name suggests, isolated

94 March 2020 PROFESSIONAL ELECTRICIAN

solutions are independent mini-systems, which can quickly reach their limits.”

He adds: “In light of this, Gira wanted to introduce a new and highly informative video that anyone can access online (via YouTube) to offer a clear understanding of the virtues of KNX building technology versus conventional, purely electromechanical solutions”.

WATCH THE VIDEO AT: WWW.RDR.LINK/EN056

ADGRIDS_PE_ADGRIDS.PMM_May06 31/01/2020 10:19 Page 95

NEW ELEX MAG AD 285 PE_Layout 1 07/01/2020 15:22 Page 1

THE TRADESHOW FOR PROFESSIONAL ELECTRICIANS PROFESSIONAL ELECTRICIAN

ELEX2020

Sponsored by

The Electricians’ Exhibition

Leading brands, live demos, tech talks, show specials – all under one roof!

NEXT SHOWS EventCity, Manchester: Wespoint Arena, Exeter:

Thursday 12th & Friday 13th March 2020 Thursday 23rd & Friday 24th April 2020

Featuring:

Register for free at www.elexshow.info

097_PE_MAR20_Layout 1 06/02/2020 13:31 Page 97

CAUGHT ON

C A M E R A Lee (via Twitter): A landlord was showing me around a house that needed a rewire and warned me to be careful because some of the floorboards had been left up. He then went and did this‌.

SOCIAL SNAPS!

AC Electrics (via Twitter): Called out to investigate a ring circuit tripping, removed the socket and found this creepy-crawly hiding inside.

Osborne Electrical (via Twitter): When yellow phase dies just add a small link into the main switch!

Chris Craven (via Facebook): No earth and a nick on the line which touched down on the stop end box (as can be seen through the orange glow). Bad times.

Chris (via Facebook): Can’t be bothered to remove the existing rose? No problem, just cut the back out of the fitting!

Martyn (via Facebook): Found on a Monday morning EICR: no junction box, no problem!

PROFESSIONAL ELECTRICIAN March 2020 97

098 PE MARCH 2020 INDEX_Layout 1 07/02/2020 09:52 Page 98

ADVERTISER INDEX ALL LED Ltd ................................................................... Page 22

Logic4training................................................................. Page 91

Aurora Ltd....................................................................... Page 79

Luceco UK Ltd............................................................... Page 26

BG Electrical Ltd ........................................................... Page 63

Lux General Lighting Ltd............................................. Page 77

Bott Ltd ............................................................................ Page 47

M2 Electrical ................................................................... Page 41

Bromleighs..................................................................... Page 90

Megger Ltd .............................................. Outside Back Cover

Castline Systems ........................................................... Page 91

Metrel UK Ltd ................................................................ Page 38

Channel Safety Systems ............................................. Page 91

NICEIC & ELECSA.......................................................... Page 71

Chint Europe (UK) Ltd.................................................. Page 74

Niglon Ltd ................................................................. Pages 12,13

C-TEC Ltd........................................................................ Page 37

Nissan Motor (GB) Ltd .................................................. Page 16

Cudis Ltd ........................................................................ Page 85

Ovia Lighting .................................................................. Page 61

DANLERS Ltd................................................................. Page 95

PASS (Portable Appliance Safety Services) Ltd ... Page 87

Deta Electrical Company Ltd..................................... Page 43

PEUGEOT Motor Company PLC ............................... Page 10

DSN Innovate Ltd ......................................................... Page 49

Prefect Controls Ltd...................................................... Page 81

Electrorad UK Ltd............................................................ Page 7

RF Solutions Ltd ........................................................... Page 69

ELEX ................................................................................ Page 96

Robert Bosch Ltd.......................................................... Page 25

Elite Security Products Ltd ........................................ Page 60

Schneider Electric ......................................................... Page 19

Engex................................................................................ Page 51

Scolmore International Ltd......................................... Page 35

FireAngel Safety Technology Ltd ............................ Page 66

Solid Franchising Ltd ................................................... Page 87

flex7 Ltd .......................................................................... Page 30

Tansun Ltd ..................................................................... Page 95

Fluke (UK) Ltd................................................................ Page 58

Test Instrument Solutions Ltd ................................... Page 33

Ford Motor Co Ltd......................................................... Page 15

The Focus Training Group......................................... Page 95

Forum Lighting Solutions Ltd................. Inside Front Cover

Timeguard Ltd............................................................... Page 50

GreenBrook Electrical plc .......................................... Page 44

Trade Skills 4U............................................................... Page 81

Hamilton Litestat........................................................... Page 27

Tysoft Software Ltd ...................................................... Page 74

Hollycroft Software Ltd ............................................... Page 95

UNICRIMP Ltd................................................................ Page 57

Hultafors Group UK Ltd................................................. Page 4

Vauxhall Motors Ltd.................................................. Pages 8,9

IDEAL INDUSTRIES EMEA .......................................... Page 21

Vent-Axia Group Ltd ..................................................... Page 71

LED Group...................................................................... Page 36

Walraven Ltd.................................................................. Page 54

LEDVANCE Ltd.............................................................. Page 83

Wise Controls................................................................ Page 90

Lightwave ....................................................................... Page 84

WISKA UK Ltd ................................................................ Page 74

LINIAN Supply Co Ltd ................................................. Page 95

FP_Layout 1 14/10/2019 11:44 Page 46

WANT TO KNOW MORE? TO HELP YOU FIND OUT MORE ABOUT ANYTHING YOU’VE SEEN IN THIS ISSUE, WE’VE INTRODUCED A NEW DIGITAL INFORMATION SERVICE. RDR.LINK IS DESIGNED TO GET YOU FASTER ACCESS STRAIGHT TO THE EXACT ONLINE PLATFORM THAT HAS THE SPECIFIC INFORMATION YOU WANT. FROM VIDEOS TO TECHNICAL GUIDES, PDF’S TO PODCASTS – RDR.LINK WILL TAKE YOU STRAIGHT THERE.

TECHNICAL &

TRAINING

“THE ONLINES COURSE WA PERFECT FOR ME!” product A trio of PE’s their testers give on the IET thoughts online 18th Academy’s ing.

Edition train

the shers of As joint publi gside BSI), the s (alon hs since the Regulation strong s full nine mont particularly t’s now a ng g Regulation IET is in a key traini n IET Wirin the to deliver 18th Editio ing with it position s and, effect, bring ENT – to electrician receive came into rial to s mate KELLY VINC emy, has electrician help IET Acad TRICS direct need for in order to sive yet through its KELLY ELEC rtaken any al training full dy a a comprehen ously unde e to help profession nstrate a as I’m alrea introduced I’d not previ and demo training cours . the IET and, , I opted to them prove le online 7671:2018 d with the BS flexib training with of -spee electrician ding get up-to n qualified understan ricians delegates 17th Editio ands of elect te course. n. for ’s upda le Editio the there With thous 18th UK, take is suitab with an e, which are starts around the ledge of ng options of what the The cours The softw operating age of traini ing details working know those ing short includ you’re wing no n, narro by certainly anyone need can be sure introductio However, authored es, so you idual to them. has been then available e and BS 7671, course involv course for you. It for the indiv best route try experienc cially right ations, and ise, espe down the with indus taking the new regul y of BS 7671 ding of the difficult exerc time that the histor m. can be a understan ricians can goes into the ering syste consider res that elect any time. the numb from their e is split into when you and ensu explains the cours here, at to plan away rtaking of ions le anyw have it solut an Each modu re unde delegates complete put such lations, with le. always) to work if they’ ng. of the Regu Keen (as day-to-day bers of PE’s sections of each modu traini me the three mem d, on-site t at the end every ng has beco class-base to the test, were given assessmen points for years, traini t, with awarded lete testing’ team e with In recent ‘product t you comp You’re then the cours flexible beas with n assessmen undertake a much more online training/ chance to te (for those ed the golde module and and viable you’ve reach e basically full and upda options available e-learning both the and when more than s, you’v n already) -based ns now a t of 760 point 17th Editio ional class examinatio the targe tradit to the ht: rence is alternative to them. they thoug your prefe ’s a 201 out what Whether September paper, there Let’s find pathway.

RICIAN or pen and NAL ELECT mouse clicks for you.

PROFESSIO route suitable

I

STEP

ONE

tory d the s Enjoye t a en w n and th ? e r o wm to kno

W

rece (even if y eased to ished. d I was pl once I’d fin down) an mpletion co on e of online pe certificat ty is if th ion, rience In my opin nse expe r less inte oom, and ing is a fa the classr of he train re su nd your pres than the ining arou fit the tra ound. ws you to her way ar lo ot al e th as ve to ther than that you ha is day job, ra ck ba t draw rough a One sligh G exam th C& p xam -u w follo hich can book the ovider (w training pr s after, separate few month a be es y that sometim availabilit ld be g on the so it wou dependin , s) ha er provid exam as particular plete the m co d ul u co that nice if yo training so to is online mind. part of th sh in your fre or this is dent ng more confi everythi feel much online gulations I certainly of the Re ts en m ve ire l ha requ at I also about the d to say th am please now and up exam! w llo update fo y passed m y take the T Academ out the IE round. details ab ing, go line train For more on on iti Ed th to be and the 18 5 r.link/eh11 rised at to: www.rd owing me

STEP

TWO

r.link/ ww.rd y. w e h t stor Locate of the d n e e at th

T H R E E ink/ STEP dr.l

w.r he ww de enter t co ly e p u Sim e uniq with th browser into a

L .

R D R .

W W

FOUR S T E P e you will tak

It to the directly ource. s e r relative

0 0 0 0 0 / K N I

PROFESSIONAL

ELECTRICIAN & INSTALLER

PE Page Grid_Layout 1 03/02/2020 11:40 Page 1