16
The wiring for the power line of indoor unit, the wiring between indoor and outdoor units as well as the wiring between
indoor units:
• The electrical power line and signal lines must be fastened tightly.
• Every indoor unit must have the ground connection.
• The power line should be enlarged if it exceeds the permissible length.
• Shielded lays of all the indoor and outdoor units should be connected together, with the shielded lay at the side of signal
lines of outdoor units grounded at one point.
• It is not permissible if the whole length of signal line exceeds 1000m.
Items
Total
Current of
Indoor Units(A)
Cross
Section
(mm
2
)
Length
(m)
Rated
Current of
Overow
Breaker(A)
Rated current of residual
Circuit Breaker(A)
Ground Fault
Interruptor(mA)
Response time(S)
Cross Sectional
Area of Signal Line
Outdoor -indoor
(mm
2
)
Indoor -indoor
(mm
2
)
<10 2 20 20 20 A,30 mA,0.1S or below
2 cores×0.75-2.0mm
2
shielded lin
≥10 and <15 3.5 25 30 30 A,30 mA,0.1S or below
≥15 and <22 5.5 30 40 40 A,30 mA,0.1S or below
≥22 and <27 10 40 50 50 A,30 mA,0.1S or below
• The shielding lay of the signal line must be grounded at one end.
• The total length of the signal line shall not be more than 600m.
Signal Wiring of Wired controller
Length of Signal Line (m) Wiring Dimensions
<100 0.3mm
2
× core shielding lin
≥100 and <200 0.5mm
2
× core shielding lin
≥200and <300 0.75mm
2
× core shielding lin
≥300 and <400 1.25mm
2
× core shielding lin
≥400 and <600 2 mm2× core shielding lin
Electrical Wiring
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