Power Supply Cable Wiring - Fujitsu AOU48RLXFZ Design & Technical Manual

4-2.

POWER SUPPLY CABLE WIRING

POWER SUPPLY CABLE SPECIFICATIONS
Use a separate power supply for the outdoor unit and branch box.
Note: *1: Selected sample (Select an appropriate diameter of cable and the kind of cable according to each
country and a local rule. )
*2: It is a total value of connected indoor units and branch box. (Refer to "3.OUTDOOR UNIT & BRANCH
BOX" and "4.INDOOR UNITS")
*3: Selected sample (Select the one that the rush current when the power supply is turned on can be
endured.)
Outdoor unit
Model cable size
AOU48RLXFZ 8 AWG *1
● Select cable size base on the value of MCA and MOCP. In the table of "3. OUTDOOR UNIT
AND BRANCH BOX",example of wiring specification for outdoor unit is given.
● Select circuit breaker for outdoor unit based on the value of MOCP.
Branch box
Model cable size
UTP-PU03A
14 AWG *1
UTP-PU03B
● Select cable size based on the value of total MCA of the indoor units and branch box
connected.
● In order to be influenced of a breaker stop, please divide a power supply circuit for every
branch box.
● Each branch box must be connected to a circuit breaker.
● Please design the power supply circuit to keep the voltage drop within 2%.
Indoor unit
Model
All models
● The branch box provides power to the indoor units.
● Total Minimum Circuit Ampacity of connected indoor units and branch boxes must be less
than 15A.
*MCA : Minimum Circuit Ampacity
*MOCP : Maximum Over Current Protection
Maximum current Circuit breaker
MCA
26.5 A
Maximum current Circuit breaker
MCA
*2
cable size Remarks
208/230V 60Hz
14 AWG *1
3Wire + ground
- (06 - 39) -
Earth leakage
breaker
MOCP
30mA 0.1sec or
40 A
less
Earth leakage
breaker
MOCP
30mA 0.1sec or
15 A *3
less
Remarks
208/230V 60Hz
2Wire + ground
Remarks
208/230V 60Hz
2Wire + ground
6. SYSTEM DESIGN