The 2002 NEC required AFCI protections for all outlets in dwelling unit bedrooms (receptacle, lighting, smoke alarms, etc). The 1999 NEC required AFCI protections for receptacle outlets in dwelling unit bedrooms. An arc actually happens before contact is made when the current jumps a tiny gap.ĪFCI receptacles can provide protection to standard receptacles that are connected to the load side of the AFCI. They happen when anything connected to a line phase (like a line wire) is in the process of touching anything that is connected to a different line phase, neutral or ground. An AFCI ignores these normal arcs, but will detect the abnormal ones, using advanced technology.Īrc faults and flashes are usually caused by loose connections and/or damaged wire, and are the greatest cause of electrical fires. Small arc conditions exist in a normal circuit (light switches, motor starting or stopping). An AFCI is a receptacle or circuit breaker that is used to open a circuit if an abnormal arc is detected.
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