National Electrical Installation Standards

Standards as High as Your Own

 
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Monday, August 1, 2022

Question:

Hello and thanks for this NEC forum. Practical answers based on questions at face value. Our question is can a fuse serve as both the branch-circuit short-circuit and ground-fault protection in addition to the overload protection for a motor?

Tim Hart

A

Answer:

Hi Tim,

Thanks for the kind comments. Yes, a fuse can serve as both the branch-circuit short-circuit and ground-fault protection in addition to the overload protection for a motor as long as the rating of the fuse provides the overload protection specified in 430.32. See Section 430.55 [2020 NEC]

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