Code Q&A: Current-Limiting Overcurrent Device

Code Q&A: Current-Limiting Overcurrent Device

NEC requirements for overcurrent devices

Q. What is a current-limiting overcurrent device?

Find the Answer

A.  An overcurrent device (typically a fast-acting fuse) that reduces the fault current to a magnitude substantially less than that obtainable in the same circuit if the current-limiting device wasn’t used. See Sec. 240.40 and Sec. 240.60(B) [240.2] for additional information.

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