Design and Technical Manual

6. SYSTEM DESIGN
POWER SUPPLY CABLE WIRING4-2.
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
z
Model cable size
Maximum current
MCA
Circuit breaker
MOCP
Earth leakage
breaker
Remarks
AOU48RLXFZ1 8 AWG *1 26.5 A 40 A
30 mA 0.1 sec or
less
208/230V 60Hz
2Wire + ground
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
z
Model cable size
Maximum current
MCA
Circuit breaker
MOCP
Earth leakage
breaker
Remarks
UTP-PU03A
14 AWG *1 *2 15 A *3
30 mA 0.1 sec or
less
208/230 V 60 Hz
2Wire + ground
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
z
Model cable size Remarks
All models 14 AWG *1
208/230V 60 Hz
3Wire + ground
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
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SYSTEM DESIGN SYSTEM DESIGN