Code Quiz: Arc Energy Reduction

The NEC requirement for arc energy reduction

Fill in the blank. A new NEC requirement on arc energy reduction for fuses applies to fuses rated ____ amperes or higher. The fuses shall have a clearing time of _____ seconds or less at the available arcing current or one of the methods listed in this Sec. 240.67(B) shall be provided.

A) 1,000 / 0.33
B) 1,200 / 0.07
C) 1,600 / 0.004
D) 800 / 0.042

Find the Answer

Answer: B

As noted in Sec. 240.67, &ldquo

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