Equipment & SystemsQuestion 275 of 521
A continuous-duty motor has a nameplate FLA of 62 A and a service factor of 1.15. What is the maximum overload device rating at 125% under NEC 430.32(A)(1)?
a.62 A
b.71.3 A
c.77.5 A
d.86.8 A
Explanation
125% of nameplate FLA for an SF >=1.15 motor: 62 x 1.25 = 77.5 A. 62 A omits the factor, 71.3 A is 115%, and 86.8 A is 140% (the higher trip ceiling of 430.32(C), used only when the 125% device won't allow starting).
Law Reference: 2023 NEC §430.32Practice all 521 questions free — no signup required.
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