Stumped by the Code? Defining Overcurrent

Stumped by the Code? Defining Overcurrent

Your most pressing National Electrical Code (NEC) questions answered


Q. What does the Code mean by “overcurrent”?

A. Overcurrent exists when current exceeds the rating of equipment or the ampacity of a conductor, due to an overload, short circuit, or ground fault. The Code defines these three terms in Art. 100 as follows:

• Overload. An overload is a condition where equipment or conductors carry current exceeding their current rating. A fault, such as a short ci

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