Power Supply Cable Wiring - Fujitsu AUYG07LVLA 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.)
*4: Select the breaker that enough load current can pass through it.
Outdoor unit
Model
AO G45LBT8
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
UTP-PY03A
UTP-PY02A
Select cable size base 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.
*MCA : Minimum Circuit Ampacity
*MOCP : Maximum Over Current Protection
This product is intended for professional use. Be sure to use a dedicated power circuit. Never use
a power supply shared by another appliance.
Above "Wire size" and "Breaker" are examples.
Regulation of wire and circuit breaker differs from each locality, refer to and be in accordance with
local rules.
To prevent electrical noise malufunction and hazards from insulation failure, the unit should be
connected to ground.
All field wiring and components must be provided by a licensed electrician.
Use copper conductors only.
Use crimp-type terminals and tighten the terminal screws to the specified torques, otherwise,
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.
Maximum current
Cable size
MCA
2
6.0 mm *1 26.5 A
Maximum current
Cable size
MCA
2
2.5 mm *1 *2
Cable size Remarks
230V 50Hz
2
1.5 mm *1
3Wire + ground
Circuit breaker
MOCP
30mA 0.1sec or
32 A
Circuit breaker
MOCP
15 A *3
Caution
- (06 - 40) -
Earth leakage
Remarks
breaker
230V 50Hz
less *4
2Wire + ground
Earth leakage
Remarks
breaker
230V 50Hz
30mA 0.1sec or
less *4
2Wire + ground
6. SYSTEM DESIGN