Fujitsu AJ 126LELDH Series Design & Technical Manual page 766

• Table A. Current breaker requirements
Model
All models
When the power crossover wiring is done, make it so that the total of the MCA of the connected
indoor units does not exceed the 15 A.
If the capacity of connected indoor units exceed the upper limit, either add breakers or use a
breaker with a greater capacity.
• Table B. Earth leakage breaker requirements
Breaker capacity
30 mA, 0.1 sec or less
CAUTION
• Obtain the distribution network operator's agreement about the power capacity of the power
supply system, specification of the cable and the harmonic current, etc. when you connect the
outdoor unit with the power supply.
• 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 Fuse capacity are an example.
• Regulation of wire size and circuit breaker differs from each locality, refer in accordance with the
regional standard.
• Specific wiring requirement should be applied Type 60245 IEC66 or equivalent.
• To prevent the electrical noise malfunction and hazards from insulation failure, the unit should
be connected to ground.
• A disconnect switch may required for ease of maintenance in accordance with the regional stan-
dard for each unit. Check the regional standard. Make the wire length between disconnect
switch and unit terminal as short as possible.
• When connecting the indoor unit power supply from part of a 3-phase power source, taking the
power from each phase uniformly is recommended to prevent unbalance.
• All field wiring and components must be provided by a licensed electrician.
• Use copper conductors only.
4-2. Power supply cable
MCA (A)
Refer to "Electrical characteristics"
UNITS on page 04-34
- (06-52) -
in Chapter 4. INDOOR
Maximum connectable indoor unit
30 or less
Fuse capacity (A)
20
4. Wiring design