Table 6.1 Electrical Data and Recommended Wiring, Breaker Size/1 Outdoor Unit Model
Power Supply
Max. Running Current
(A) 17 RAS-8FSNQ 18 RAS-10FSNQ 21 RAS-12FSNQ 30 RAS-14FSNQ 33 RAS-16FSNQ 32 RAS-18FSNQ 380-415V /50Hz 37 RAS-20FSNQ 42 RAS-22FSNQ 50 RAS-24FSNQ 54 RAS-26FSNQ 59 RAS-28FSNQ 67 RAS-30FSNQ 70 RAS-32FSNQ ELB: Earthleakage Breaker MLFC: Flame Retardant Polyflex Wire
Power Supply Line (φmm) MLFC0.75SQ MLFC1.25SQ MLFC2.0SQ MLFC2.0SQ MLFC3.5SQ MLFC3.5SQ MLFC3.5SQ MLFC5.5SQ MLFC5.5SQ MLFC5.5SQ MLFC8SQ MLFC8SQ MLFC8SQ
ELB Nominal Current (A) 30 30 30 40 50 50 50 75 75 75 100 100 125
Nominal Sensitive Current (mA) 30 30 30 30 30 30 30 30 100 100 100 100 100
Fuse (A) 15 20 20 40 40 40 40 60 60 60 75 75 75
Field Minimum Wire Sizes for Power Source Power Source Cable Size EN60 335-1 MLFC *1 *2 17 RAS-8FSNQ 2.5mm2 0.75mm2 18 RAS-10FSNQ 2.5mm2 1.25mm2 2 21 RAS-12FSNQ 2.5mm 2.0mm2 2 30 RAS-14FSNQ 2.5mm 2.0mm2 2 33 RAS-16FSNQ 6mm 3.5mm2 2 32 RAS-18FSNQ 380-415V 6mm 3.5mm2 37 RAS-20FSNQ /3φ/50Hz 3.5mm2 42 RAS-22FSNQ 5.5mm2 50 RAS-24FSNQ 5.5mm2 54 RAS-26FSNQ 5.5mm2 59 RAS-28FSNQ 8mm2 66 RAS-30FSNQ 8mm2 70 RAS-32FSNQ 8mm2 * Refer to the NOTES for selection of the power source cable size. Model
Power Source
Maximum Current
Transmitting Cable Size EN60 335-1 *1
MLFC *2
0.75mm2
0.5mm2
NOTES: 1) Follow local codes and regulations when selecting field wires. 2) The wire sizes marked with *1 in the table are selected at the maximum current of the unit according to the European Standard, EN60 335-1. Use the wires which are not lighter than the ordinary tough rubber sheathed flexible cord (code designation H05RN-F) or ordinary polychloroprene sheathed flexible cord (code designation H05RN-F). 3) The wire sizes marked with *2 in the table are selected at the maximum current of the unit according to the wire, MLFC (Flame Retardant Polyflex Wire) manufactured by Hitachi Cable Ltd., Japan. 4) Use a shielded cable for the transmitting circuit and connect it to ground. 5) In the case that power cables are connected in series, add each unit maximum current and select wires below. Selection According to EN60 335-1 Selection According to MLFC (at Cable Temperature of 60oC) Current i (A) Wire Size (mm2) Current i (A) Wire Size (mm2) i≤6 0.75 i ≤ 15 0.5 *3: In the case that 6 < i ≤ 10 1 15 < i ≤ 18 0.75 current exceeds 63A, 10 < i ≤ 16 1.5 18 < i ≤ 24 1.25 use MLFC cables. 16 < i ≤ 25 2.5 24 < i ≤ 34 2 25 < i ≤ 32 4 34 < i ≤ 47 3.5 32 < i ≤ 40 6 47 < i ≤ 62 5.5 40 < i ≤ 63 10 62 < i ≤ 78 8 63 < i *3 78 < i ≤ 112 14 112 < i ≤ 147 22
Install a multi-pole main switch with a space of 3.5mm or more between each phase.
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