Advanced WiringQuestion 71 of 110
A motor without a marked service factor (or with SF under 1.15) has a full-load current of 28 A. What is the maximum overload protection at 115%?
a.35 A
b.28 A
c.32.2 A
d.30 A
Explanation
For motors with a service factor less than 1.15, overload protection is limited to 115% of nameplate FLA: 28 x 1.15 = 32.2 A.
Law Reference: 2023 NEC 430.32(A)Practice all 110 questions free — no signup required.
Related questions on this topic
- A Class 2 power-limited circuit at 30 V or less is limited to a maximum power of:
- Cables listed for power-limited fire alarm use are marked with which type designation?
- Two 10-HP, 460-V motors (14 A each) are supplied by one feeder. What minimum feeder conductor ampacity is required?
- Which wiring method is acceptable in a Class I, Division 2 location?
- A required branch circuit that supplies a sign or outline lighting system must be rated at least:
- Low-voltage lighting systems covered by Article 411 are limited to a maximum circuit voltage of:
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against Master Electrician Licensing Exam (NEC-based) · How we review