Electrical Exam Term
Arc Fault Circuit Interrupter (AFCI)
A circuit breaker designed to detect dangerous electrical arcs and disconnect power before a fire can start.
Detailed Explanation
AFCIs detect the unique electrical signature of arcing faults, which can occur in damaged or deteriorated wiring. Per NEC 210.12, AFCI protection is required in most habitable rooms of dwelling units, including bedrooms, living rooms, kitchens, and hallways. They protect against both series arcs (in a single conductor) and parallel arcs (between conductors).
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Practice QuestionEasy
Which of the following best describes the concept of Arc Fault Circuit Interrupter (AFCI)?
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