Equipment & SystemsQuestion 279 of 521
For a 100 HP, 460 V motor (FLC 124 A), what minimum branch-circuit conductor ampacity does NEC 430.22 require?
a.124 A
b.136.4 A
c.155 A
d.174.6 A
Explanation
430.22 requires 125% of FLC: 124 x 1.25 = 155 A. 124 A omits the factor, 136.4 A is 110%, and 174.6 A is about 141%.
Law Reference: 2023 NEC §430.22Practice all 521 questions free — no signup required.
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