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Thread: Ground fault for jet tub and heater

  1. #1
    Join Date
    Mar 2015
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    Commerce City, CO
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    13

    Ground fault for jet tub and heater

    I'm installing a whirlpool tub with cord plug disconnect jet motor and heater. What is the best solution GFI Outlet in tub access panel under tub or a GFI circuit breaker.
    Last edited by Adams14; 04-08-17 at 05:03 PM.

  2. #2
    Join Date
    Nov 2003
    Location
    Roanoke, VA.
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    3,931
    Quote Originally Posted by Adams14 View Post
    I'm installing a whirlpool tub with cord plug disconnect jet motor and heater. What is the best solution GFI Outlet in tub access panel under tub or a GFI circuit breaker.
    I would do the receptacle
    but I would install it where I could get to it to reset it if and when it trips. It has to be accessible.
    Breaker is expensive.
    Sometimes I don't know whether I'm the boxer or the bag.

  3. #3
    Join Date
    Apr 2003
    Location
    WI
    Posts
    25

    GFI for jet tub

    If possible and space allows, we install a deadfront/faceless gfi near the unit and install a duplex receptacle under the tub.

  4. #4
    Join Date
    Apr 2009
    Location
    Williamsburg, VA
    Posts
    3,495
    Dunno if the 11/14/17 NEC requires GFCI receps for cord and plug spas to be readily accessible, but if they do, I'd go with a GFCI breaker either at the panel or disconnect vs a GFCi receptacle behind the skirting of the spa.
    Electricians do it until it Hertz!

  5. #5
    Join Date
    Dec 2012
    Location
    Placerville, CA, USA
    Posts
    17,258
    AFAIK using a dead front GFCI gets around the restrictions on receptacles too close to the spa.

    Sent from my XT1585 using Tapatalk

  6. #6
    Join Date
    Aug 2004
    Location
    Las Vegas
    Posts
    407
    Best solution depends on best for who.

    If the extra cost is not an issue best would be a GFCI breaker.

    Best for the one buying the materials and getting paid a fixed amount regardless where the GFCI is would be to have a GFCI receptacle.

    But then you may have to answer the inspector, is it receptacle accessible.
    Lower end tubs may have a removable fiberglass / plastic side panel.
    The norm is wrap it in tile.
    If the tub motor side is adjacent to another room an access can be put in there.
    Or in the ceiling below a panel with a hole in the floor to access. That would need some fire rating considerations.
    It's to the owners benefit to have an access for service.
    Seen in hotels panels made on the side of the tub that were tiled, and the panel caucked in (no grout around the panel).
    Even then it needed a tile guy to remove the cover and many times repair the area.

    The faceless is a compromise. You do have a bit more material and labor. The owner may or may not care about the extra wall box.

    For servicing the GFCI breaker wins. At some point GFCI receptacles trip, fail, and used to need to be tested (UL 943 auto test I don't know much about).
    Don't know how many times having to lay on the floor, blindly reaching in with an arm an a stubby to change out a bad GFCI receptacle hidden away somewhere. Come to find out he same person didn't bond the box or motor properly.

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