Services & DistributionQuestion 35 of 110
A feeder is protected by a 400-A overcurrent device. What is the minimum copper equipment grounding conductor?
a.#6 AWG
b.#4 AWG
c.#3 AWG
d.#1 AWG
Explanation
For a 400-A overcurrent device the table requires #3 Cu for the equipment grounding conductor.
Law Reference: 2023 NEC Table 250.122Practice all 110 questions free — no signup required.
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