Power Supply Cable - Fujitsu AJ 126LELDH Series Design & Technical Manual

4-2. Power supply cable

RELATED LINKS
"Electrical characteristics"
"Electrical characteristics"
¢ Specifications
Use a separate power supply for the outdoor unit and indoor unit.
 Outdoor unit
Model
AJ072LELDH
AJ090LELDH
AJ108LELDH
AJ126LELDH
AJ144LELDH
AJ162LELDH
• Select wire size based on the value of MCA (Minimum Circuit Ampacity) and TOCA (Total Value of
Each Over Current Set). For wiring specifications of outdoor units, refer to
tics" in Chapter 3. OUTDOOR UNITS on page 03-31.
• Select circuit breaker for outdoor unit based on the value of MCA in
Chapter 3. OUTDOOR UNITS on page 03-31. The breaker should not operate when stating cur-
rent is generated.
 Indoor unit
Model
All models
Refer to the table for the breaker specifications of each installation condition.
Perform the power crossover wiring within the range of the same refrigerant system. When the pow-
er crossover wiring is done, make a connection for indoor units to satisfy conditions of Table A and B
below.
• Select cable size based on the value of total MCA of the indoor units connected, and if necessary
divide the system so that the total MCA of the indoor units connected is smaller than 15 A. The
indoor unit shall be connected up within refrigerant system.
• In order to influence of a breaker stop, divide the power supply circuit for every refrigerant system.
• Attach at least one breaker per refrigerant system.
• Design the power supply circuit to keep the voltage drop within 2%.
4-2. Power supply cable
in Chapter 3. OUTDOOR UNITS on page 03-31
in Chapter 4. INDOOR UNITS on page 04-34
Recommended
Fuse capacity (A)
2
cable size (mm )
6
6
6
10
10
10
Recommended
Fuse capacity (A)
2
cable size (mm )
2.5
- (06-51) -
Breaker for leakage
current
20
20
25
100 mA, 0.1 sec or
less
40
40
40
"Electrical characteristics"
Breaker for leakage
current
20 Refer to Table B
Remarks
"Electrical characteris-
in
Remarks
230 V ~ 50 Hz
2 wire + ground
4. Wiring design