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IAEI Magazine | Author: Bill Unseld
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Bill Unseld

Bill Unseld is product manager and Alan Manche is director, Industry Standards. Square D Company.


Understanding the Combination AFCI Expansion in NEC-2008

Arc-fault circuit interrupters (AFCIs) have become a familiar technology to electrical contractors during the past decade. The first branch-feeder AFCIs debuted in the late 1990s, and detected exclusively parallel arcs, or current that travels from one circuit conductor to another.