Electrical systems The electrical system has a voltage of 12 V. The generator has a charging regulator to make it more effective. The engine also has semi-automatic and normal fuses which cut off the current if there is an overload. There are also fuses for the trim pump and the Power Trim controls.
7738812 - Downloaded from www.volvopenta.com 7/10/2006 5:02:36 AM
WARNING! Danger of explosion! Never allow an open flame or sparks near the battery area. Always use eye protection when working with the batteries. The battery electrolyte contains extremely corrosive sulfuric acid. If electrolyte comes into contact with the skin: Wash it off with soap and plenty of water. If battery acid comes in contact with the eyes, immediately flush with copious amounts of water. Contact a doctor immediately.
Electrolytic corrosion To protect the drive and propeller against galvanic corrosion your boat and its propulsion unit have galvanic corrosion protection. Leakage current from the electrical system will prevent this protection system from working and result in major damage. Leakage current from the electrical system can be caused by faulty equipment or incorrect installation of electrical equipment. IMPORTANT Electrolytic corrosion as a consequence of leakage currents may cause serious damage to your boat’s equipment within a short time. Work on the boat’s low voltage circuit should only be carried out by qualified/experienced personnel. Installation or work on the shore power equipment must only be carried out by electricians authorized to work with high-voltage installations. The following should always be observed: Route and clamp electric cables so that they will not be exposed to damp or bilge water in the keelson. The main engine switch must be connected to the positive (+) terminal on the battery, and cuts off all power consu-
56
ming equipment as soon as the engine is stopped. If an extra battery has been installed then there must be separate switches for extra equipment. There should also be a main switch between the auxiliary battery positive terminal and the electrical equipment fuse strip. The main switch for the auxiliary battery must cut off all power consuming equipment connected to that battery and be turned off when power is no longer needed. The engine or drive must not be electrically connected to other equipment such as the trim plane, bathing steps etc. The engine and transmission must not be used as ground points for radio or navigation installations or other electrical equipment with separate ground cables. All separate ground cables must have a common ground point, separated from the engine and transmission. If shore power is connected a protective ground should not be connected to the engine or to any other ground terminal on the boat. Transformers connected to shore power must be installed so that the protective ground on the input side (120/220 V) and the negative connection on the output side (12 V) are not connected.
