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Old 11-24-2012, 05:01 PM   #1
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NEC code


I am wiring a 480 VAC 100 AMP 3 Phase circuit. I am using #3 AWG wires for the power and I would like to know if I can use #4 AWG wire for my ground?

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Old 11-24-2012, 06:47 PM   #2
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NEC code


# 8 Cu is sufficient for the equipment grounding conductor on a 100 amp circuit.

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