Switch (A)Minimum Wire Thickness (mm
2
)
Branch Capacity
Fuse
Model
30
50
30
50
4.0
6.0
–
–
4.0
6.0
Wire Thickness (mm
2
)
Main
Cable
Model
Indoor Unit
All Models
Branch
Switch (A)
Capacity
Fuse
2525
Ground
2.5
2.5
2.5
Ground
Main Cable
Breaker for Wiring
(NFB)
30 A
50 A
Breaker for Current
Leakage
30 A 100mA 0.1 sec. or less
50 A 100mA 0.1 sec. or less
Breaker for Wiring
(NFB)
Breaker for Current
Leakage
25 A
20 A 30mA 0.1 sec. or
less
D
G
H H H H H H H
F
C
B
B
A
E
A Power Supply (3-Phase, 4-Wire) 380/400/415 Volt
B Switch
C Outdoor Unit
D Ground
E Power Supply (Single-Phase) 220/230/240 Volt
F 1.5 mm
2
or more
G Pull Box
H Indoor Unit
CRUN0458S0
CRUN01008T0
1. Use a separate power supply for the outdoor unit and indoor unit.
2. Bear in mind ambient conditions (ambient temperature,direct sunlight, rain water,etc.) when proceeding with
the wiring and connections.
3. The wire size is the minimum value for metal conduit wiring. The power cable size should be 1 rank thicker
taking into account of line voltage drops.
Make sure the power-supply voltage does not drop more than 10%.
4. Specific wiring requirements should adhere to the wiring regulations of the region.
5. Power supply cable of parts of appliances for outdoor use shall not be lighter than polychloroprene sheathed
flexible cable (design 245IEC57). For example, use wiring such as YZW.
WARNING
• Be sure to use specified wires for connections so that no external force is imparted to terminal connec-
tions. If connections are not fixed firmly, it may cause heating or fire.
• Be sure to use the appropriate type of overcurrent protection switch. Note that generated overcurrent may
include some amount of direct current.
CAUTION
•
Some installation site may require attachment of an earth leakage breaker. If no earth leakage breaker is installed,
it may cause an electric shock.
• Do not use anything other than breaker and fuse with correct capacity. Using fuse and wire or copper wire with
too large capacity may cause a malfunction of unit or fire.
◆ Wiring of Main Power Supply and Equipment Capacity
Schematic Drawing of Wiring (Example)
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