Equipment & SystemsQuestion 272 of 521
For the 50 HP, 460 V motor (FLC 65 A), what minimum branch-circuit conductor ampacity is required by NEC 430.22?
a.65 A
b.71.5 A
c.74.75 A
d.81.25 A
Explanation
430.22 requires 125% of FLC: 65 x 1.25 = 81.25 A. 65 A omits the factor, 71.5 A is 110%, and 74.75 A is 115%.
Law Reference: 2023 NEC §430.22Practice all 521 questions free — no signup required.
Related questions on this topic
- Per NEC Table 430.248, what is the full-load current of a 3 HP, single-phase, 115 V motor?
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- Using NEC Table 430.250, what is the full-load current of a 50 HP, 460 V, three-phase motor?
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