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18 31-5000473 Rev. 0
ENGLISH
ELECTRICAL WIRING
Wire gauge size and breaker size for total indoor amp draw. Current NEC guidelines and local codes will trump this chart.
• The electrical power line and signal line connections must be tight.
• Every indoor unit must have a ground connection.
• The power wire should be size up if it exceeds the permissible length.
• Shielding of the control 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
• The shielding layer of the controller wire must be grounded at the outdoor unit chassis ground.
• The total length of the controller wire shall not be more than 820ft(250m).
Items Cross Section
AWG (mm²)
Length
in(mm)
Rated Current of
Overflow Breaker
(A)
Rated Current of
Residual Circuit
Breaker(A)
Ground Fault
Interrupter (mA)
Response Time (S)
Cross
Sectional Area
of Signal Line
< 7 14 (2.5) 65.6 (20) 10 10 A, 30 mA, 0.1S or below
16 AWG (1.25mm²)
7 and < 11
12 (4) 65.6 (20) 15 15 A, 30 mA, 0.1S or below
11 and < 16
10 (6) 82 (25) 20 20 A, 30 mA, 0.1S or below
16 and < 22
8 (8) 98.4 (30) 30 30 A, 30 mA, 0.1S or below
22 and < 27
6 (10) 131 (40) 30 30 A, 30 mA, 0.1S or below
Total Current
of Indoor
Units (A)
Length of Controller Wire ft(m)
Wiring Dimensions AWG (mm²)
820 (250)
18 (0.72) x 3 core shielding line
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