All branch circuits supplying 125-volt, 15- and 20-ampere outlets in residential family rooms, living rooms, dining rooms, parlors, libraries, dens, bedrooms, sunrooms, recreation rooms, closets, hallways, or similar rooms must be protected by a(n) __________.

Question

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The branch circuits in these rooms must be protected by AFCI devices (Arc-Fault Circuit Interrupters) according to the National Electrical Code (NEC). AFCI devices are designed to detect and interrupt arcing faults, which can be a common source of electrical fires. Fuses and circuit breakers can provide overcurrent protection but do not provide arc-fault protection. GFCI devices (Ground-Fault Circuit Interrupters) are required for circuits in bathrooms, kitchens, and outdoor areas but are not required in the rooms listed in the question.

All Branch Circuits Supplying 125-Volt, 15- and 20-Ampere Outlets in Residential