MXZ-SM48NAM Service Manual

135
OCH789
9-2-2. Cross section area of Wire for Main Power and ON/OFF capacities
Thickness of Wire for Main Power Supply and On/Off Capacities
<When power is supplied separately>
Model
Power Supply
Minimum Wire Thickness
(mm
2
[AWG])
Breaker for
Wiring
*1
Breaker for Current
Leakage(If you use)
Minimum circuit
ampacity
Maximum rating of over
current protector device
Main Cable
*2
Ground
Outdoor Unit
36/48NAM
208/230 VAC,
60 Hz
5.3 [AWG10] 5.3 [AWG10] 30 A
30 A, 30 mA
0.1 second or less
29 A 40 A
36/42/48NAMHZ 8.4 [AWG8] 8.4 [AWG8] 40 A
40 A, 30 mA
0.1 second or less
36 A 40 A
60NAM 8.4 [AWG8] 8.4 [AWG8] 40 A
40 A, 30 mA
0.1 second or less
36 A 45 A
Branch Box Refer to installation manual of Branch Box.
<When power is supplied from the outdoor unit>
Model
Power Supply
Minimum Wire Thickness
(mm
2
[AWG])
Breaker for
Wiring
*1
Breaker for Current
Leakage(If you use)
Minimum circuit
ampacity
Maximum rating of over
current protector device
Main Cable
*2
Ground
Outdoor Unit
36/48NAM
208/230 VAC,
60 Hz
8.4 [AWG8] 8.4 [AWG8] 40 A
40 A, 30 mA
0.1 second or less
35 A 50 A
36/42/48NAMHZ 13.3 [AWG6] 13.3 [AWG6] 45 A
45 A, 30 mA
0.1 second or less
42 A 50 A
60NAM 13.3 [AWG6] 13.3 [AWG6] 50 A
50 A, 30 mA
0.1 second or less
46 A 50 A
Branch Box Refer to installation manual of Branch Box.
*1 Please follow applicable federal, state, or local codes to prevent potential leakage/electric shock. Or install a ground fault interrupt for the prevention of leakage and
electric shock.
IMPORTANT
If a current leakage breaker is used, it should be compatible with higher harmonics as this unit is equipped with an inverter.
The use of an inadequate breaker can cause the incorrect operation of inverter.
* 2
Use copper supply wires. Use the electric wires over the rating voltage 300 V.
* 3
Although the conduit size is larger than the size specied for the wire thickness according to UL standards, use a conduit size of 3/4 inch.
<When power is supplied to outdoor unit and branch box separately>
D
D
A
L1/L2
S1/S2/S3
S1/S2/S3
S1/S2/S3
C
D
L1/L2
GR
A
B
D
L1/L2
S1/S2/S3
S1/S2/S3
S1/S2/S3
C
D
F
;
;
;
;
;
;
;
;
208/230V AC 60Hz
208/230V AC 60Hz
A Switch (Breakers for Wiring and Current Leakage)
B Outdoor Unit
C Branch Box
D A-Control Indoor Unit
E CITY MULTI series Indoor unit
F Pull Box