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.)
*4: Select the breaker that enough load current can pass through it.
Outdoor unit
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Model Cable size
Maximum current
MCA
Circuit breaker
MOCP
Earth leakage
breaker
Remarks
AO
îš¾
G45LBT8 6.0 mm
2
*1 26.5 A 32 A
30mA 0.1sec or
less *4
230V 50Hz
2Wire + ground
Select cable size base on the value of MCA and MOCP. In the table of "3. OUTDOOR UNIT îž”
AND BRANCH BOX",example of wiring specification for outdoor unit is given.
Select circuit breaker for outdoor unit based on the value of MOCP.îž”
Branch box

Model Cable size
Maximum current
MCA
Circuit breaker
MOCP
Earth leakage
breaker
Remarks
UTP-PY03A
2.5 mm
2
*1 *2 15 A *3
30mA 0.1sec or
less *4
230V 50Hz
2Wire + ground
UTP-PY02A
Select cable size base on the value of total MCA of the indoor units and branch box connected.îž”
In order to be influenced of a breaker stop, please divide a power supply circuit for every branch îž”
box.
Each branch box must be connected to a circuit breaker.îž”
Please design the power supply circuit to keep the voltage drop within 2%.îž”
Indoor unit
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Model Cable size Remarks
All models 1.5 mm
2
*1
230V 50Hz
3Wire + ground
The branch box provides power to the indoor units.îž”
*MCA : Minimum Circuit Ampacity
*MOCP : Maximum Over Current Protection
Caution
This product is intended for professional use. Be sure to use a dedicated power circuit. Never use îž”
a power supply shared by another appliance.
Above "Wire size" and "Breaker" are examples.îž”
Regulation of wire and circuit breaker differs from each locality, refer to and be in accordance with îž”
local rules.
To prevent electrical noise malufunction and hazards from insulation failure, the unit should be îž”
connected to ground.
All field wiring and components must be provided by a licensed electrician.îž”
Use copper conductors only.îž”
Use crimp-type terminals and tighten the terminal screws to the specified torques, otherwise, îž”
abnormal overheating may be produced and possibly cause serious damage inside the unit.
Prepare the one that the load current can be thrown enough in the capacity of the power supply.îž”
- (06 - 40) -
SYSTEM
DESIGN
SYSTEM
DESIGN
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