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  1. #12
    Gong Shooter PSS's Avatar
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    May 2009
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    I argued with an inspector till I finally gave up that a gfci will work with out a ground wire. Here's Mike Holt's take on it backed up with a code reference.

    Under what condition can a two-wire receptacle be replaced with a three-wire receptacle, when no ground is available in the box?

    A. Where no equipment bonding means exists in the outlet box, nongrounding-type receptacles can be replaced with [406.3(D)(3)]:

    Another nongrounding-type receptacle.
    A GFCI grounding-type receptacle marked "No Equipment Ground."
    A grounding-type receptacle, if GFCI protected and marked "GFCI Protected" and "No Equipment Ground."
    Note: GFCI protection functions properly on a 2-wire circuit without an equipment grounding (bonding) conductor, because the equipment grounding (bonding) conductor serves no role in the operation of the GFCI-protection device.

    CAUTION: The permission to replace nongrounding-type receptacles with GFCI-protected grounding-type receptacles doesn't apply to new receptacle outlets that extend from an existing ungrounded outlet box. Once you add a receptacle outlet (branch-circuit extension), the receptacle must be of the grounding (bonding) type and it must have its grounding terminal grounded (bonded) to an effective ground-fault current path in accordance with 250.130(C).


    http://www.mikeholt.com/mojonewsarch...s~20050510.php
    Last edited by PSS; 09-24-2013 at 21:20.
    To anger a conservative, lie to him. To anger a liberal, tell him the truth.

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