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Electrical Wiring
Wire gauge size and breaker size for total indoor amp draw. Current NEC guidelines and local codes will trump this chart.
Items
Total
Current of
Indoor Units(A)
<7
≥7 and <11
≥11and <16
≥16 and <22
≥22 and <27
• The electrical power line and signal lines must be tightened.
• Every indoor unit must have a ground connection.
• The power wire should be size up if it exceeds the permissible length.
• Shielding of the wire of all the indoor and outdoor units should be connected together and grounded at one point.
• Signal lines should not exceed 3280ft(1000m).
Wired Controller ABC Chart
Length of Controller Wire ft (m)
≥328(100) and <656(200)
≥656(200)and <984(300)
≥984(300) and <1312(400)
≥1312(400) and <1968(600)
• The shielding lay of the controller wire must be grounded at one end.
• The total length of the controller wire shall not be more than 1968ft(600m).
Cross
Section
Length
AWG
in.(m)
2
(mm
)
14(2.5)
65.6(20)
12(4)
65.6(20)
10(6)
82(25)
8(8)
98.4(30)
6(10)
131(40)
<328(100)
Rated
Rated current of residual
Current of
Circuit Breaker(A)
Overflow
Ground Fault Interrupter(mA)
Breaker(A)
Response time(S)
10
10 A,30 mA,0.1S or below
15
15 A,30 mA,0.1S or below
20
20 A,30 mA,0.1S or below
30
30 A,30 mA,0.1S or below
30
30 A,30 mA,0.1S or below
14
Area of Signal Line
16 AWG (1.25mm
Wiring Dimensions AWG (mm
22(0.3) x 3 core shielding line
20(0.5) x 3 core shielding line
18(0.75) x 3 core shielding line
16(1.25) x 3 core shielding line
14(2) x 3 core shielding line
Cross Sectional
2
)
2
)
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