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  1. #1
    Join Date
    Aug 2007
    Location
    Maryland
    Posts
    1,164

    Default Outlet on deck story

    I thought I'd relate what I discovered last weekend. I installed an outlet on my deck a few years ago. I mounted the "waterproof" box under the railing and ran the circuit to a GFI breaker. All was well until a week ago I realized the circuit was out. I checked the breaker and it was tripped and whenever I reset it it tripped again. I thought great the breaker went bad, but checked the outside box before I did anything else.
    Much to my surprise when I unscrewed the cover, about 3/4" of water ran out. The water was up to the contacts of the outlet, causing the GFI to trip. I cleaned & dried everything, drilled a few holes in the bottom of the box and put it back together and everything works fine. I have no idea how the water got in, but at least it can get out now. When I get a chance, I'll look for a better box to replace the old one. I'm glad I had it wired to a GFI breaker.

  2. #2
    Join Date
    Jan 2011
    Location
    Columbiana, Alabama
    Posts
    623

    Default Re: Outlet on deck story

    Even 3R electrical enclosures such as Service Entrance panels have 1/8" drain holes in the bottom. You have probably solved your problem.

    I always tighten the top screws on a WP box but just finger tighten the bottom screws.

    Good Luck from Columbiana, Alabama
    Maurice Turgeon, http://thesemi-retiredelectrician.com

  3. #3
    Join Date
    May 2008
    Location
    Pacific Northwet
    Posts
    1,365

    Default Re: Outlet on deck story

    You can never seal water out, but you sure can seal it in.

    Always provide a way for water to drain out of outdoor electrical boxes, as you have done.
    The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.

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