Services & DistributionQuestion 5 of 521
What is the minimum copper EGC for a circuit protected by a 200 A breaker, per Table 250.122?
a.6 AWG
b.8 AWG
c.4 AWG
d.3 AWG
Explanation
Table 250.122 lists 6 AWG copper for a 200 A device. 8 AWG serves only up to 100 A; 4 AWG is for 300 A and 3 AWG for 400 A.
Law Reference: 2023 NEC §250.122Practice all 521 questions free — no signup required.
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