Services & DistributionQuestion 22 of 521
A feeder supplies a continuous load of 176 A. What minimum conductor ampacity (before derating) is required?
a.220 A
b.176 A
c.200 A
d.141 A
Explanation
Per 215.2(A)(1)/210.19, feeder conductors must be sized at 125% of the continuous load: 176 A x 1.25 = 220 A. Using 176 A ignores the 125% factor, and the other values misapply it.
Law Reference: 2023 NEC §215.2Practice all 521 questions free — no signup required.
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