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Thread: Arc fault and GFCI

  1. #1
    Join Date
    May 2004
    Posts
    8

    Arc fault and GFCI

    As an inspector here in NJ I am inspecting my first home with arc fault breakers. They were not required in NJ until now (when the 2008 NEC was adopted). Can you install a GFCI receptacle on an AF circuit?
    Example; the Living room is AF, can you put the outside GFCI receptacle on this circuit?
    I know this may not be a code issue but I hate to see this become an issue on the final. And no the house did not fail for this issue.

  2. #2
    Join Date
    Apr 2007
    Posts
    848
    Yes you can use both types of protection.

  3. #3
    Join Date
    Dec 2004
    Location
    Fort Collins, CO NEC: 2014
    Posts
    15,488
    Agreed, perfectly legal and functionally sound.

    I like it better to install all WP receptacles on their own 20A circuit, but that's a design decision.

  4. #4
    Join Date
    Jan 2007
    Location
    New Jersey
    Posts
    847
    They are fine together in fact many AFCI breakers have a GFI protection but at near 50 miliamps not 5.
    Rick Napier
    Inspector and Instructor

  5. #5
    Join Date
    Dec 2004
    Location
    Fort Collins, CO NEC: 2014
    Posts
    15,488
    It should be avoided calling it "GFI" protection when it is less sensitive than the Class A GFCI intended for personnel protection of 4-6 mA.

    It's more clear to call it "GFPE" when it is providing protection of wiring and equipment, such as the 50mA protection in AFCIs, IMO.

    Edit to add: I realize it's nit picking, but a lot of people don't pick up on the difference, and using different terms casts light on that for the casual reader.

  6. #6
    Join Date
    Dec 2008
    Location
    Miami, FL
    Posts
    6
    There is no reason to have issue in the final using both protections. in addition, unless the circuit is also used in the bedroom you can submit a RFI to the engineer in order to delete the AFCI in the living room and save $.

  7. #7
    Join Date
    Apr 2007
    Posts
    848
    Quote Originally Posted by Dexter C View Post
    There is no reason to have issue in the final using both protections. in addition, unless the circuit is also used in the bedroom you can submit a RFI to the engineer in order to delete the AFCI in the living room and save $.
    Not if your in 08 you cant.

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