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- An arc fault occurs when the insulation surrounding wire and cable is damaged or deteriorates. The arc fault can flare at temperatures in excess of 10,000ºF and ignite surrounding combustible material.
- Standard circuit breakers do not respond quickly enough to arc faults. An arc fault circuit interrupter (AFCI) recognizes an arcing fault and acts instantly.
- The National Electrical Code® (NEC) requires AFCIs be used in new construction on all bedroom circuits, family rooms, dining rooms, closets and hallways.
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