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Types of transmission cable
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Cable diameter
More than 1.25 mm²
Length
Less than 200 m
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Types of remote control cable
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Cable diameter
0.5 to 1.25 mm²
Length
Add any portion in excess of 10 m to within the
longest allowable transmission cable length 200 m
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Types of remote control cable 2-core cable (unshielded)
Cable diameter
0.3 to 1.25 mm²
Length
Less than 200 m
Total operating current of the indoor unit
Minimum wire thickness (mm²)
Ground-fault interrupter *1
Local switch (A)
Breaker for wiring
(NFB)
Main cable
Branch
Ground
Capacity
Fuse
F0 = 16 A or less *2
1.5
1.5
1.5
20 A current sensitivity *3
16
16
20
F0 = 25 A or less *2
2.5
2.5
2.5
30 A current sensitivity *3
25
25
30
F0 = 32 A or less *2
4.0
4.0
4.0
40 A current sensitivity *3
32
32
40
Apply to IEC61000-3-3 about max. permissive system impedance.
*1 The Ground-fault interrupter should support inverter circuit.
The Ground-fault interrupter should combine using of local switch or wiring breaker.
*2 Please take the larger of F1 or F2 as the value for F0.
F1 = Total operating maximum current of the indoor units × 1.2
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Indoor unit
9
9
Type 1
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2.4
Type 2
3()<90$
1.6
Type 3
3()<90+6
Others
Other indoor unit
0
0
C : Multiple of tripping current at tripping time 0.01s
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= 14.05
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*3 Current sensitivity is calculated using the following formula.
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Current sensitivity
30 or less
30 mA 0.1sec or less
100 or less
100 mA 0.1sec or less
Wire thickness
9
1.5 mm
2
2.5 mm
2
56
4.0 mm
2
66
1
2
3
4
6 8 10
20
C
6000
600
60
10
1
0.1
0.01
SAMPLE
Sample chart
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Rated Tripping current (x)
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