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Arc Fault breakers

Discussion in 'Electrical Engineering' started by Michael Moroney, Nov 19, 2004.

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  1. How do the new arc fault circuit breakers work? What characteristic of a
    fault do they detect, and do they do that with clever electronics or some
    analog means? I see that you have to connect the circuit's neutral to
    them and connect a neutral pigtail to the neutral bus, like a GFCI
    breaker. Do arc fault breakers also work as GFCI breakers (either de
    facto or legally)? By legally I mean does the code allow an arc fault
    breaker in a location where it requires a GFCI breaker.
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