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Old 10-20-2010, 04:43 PM   #1
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Electric Outlet Outside Letting in Water


I recently found that the outside electrical outlet on the back of my house was old and might leak, so I replaced it. I followed the instructions for a vertical installation and everything looked water tight. Today, after a rain, I lifted the cover and found water inside.

Can anyone tell me what I did wrong? Maybe I just need to get a better cover. Here are some pictures:
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Old 10-20-2010, 07:37 PM   #2
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Electric Outlet Outside Letting in Water


Two most common curpits I have ran into one is gasket can go bad or poor installment one of the two is pretty much top on my list.

However if you have plastique cover if you over tighten it will warp and can get water in there.

You have to use the proper cover in most area it will be called " in use cover " or Bubble cover this is very specfic in NEC codes and I think Canada is about right on the par as well.

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Old 10-20-2010, 07:59 PM   #3
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Electric Outlet Outside Letting in Water


Usually one has to caulk those screw-in blank-offs. They are not water-tight.
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Old 10-20-2010, 09:22 PM   #4
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Electric Outlet Outside Letting in Water


You can also use the same Teflon tape used for plumbing, often it takes more than one layer.
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Old 10-21-2010, 11:14 AM   #5
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Electric Outlet Outside Letting in Water


Thanks for the replies. I used pipe joint compound with teflon in the blank off on top. I may caulk it over though, just to be sure. Poor installment, might be. I checked it over and over, but I'm not an electrician. I'll keep checking it after every rain, and I might remove it and install a bubble cover. Maybe I just didn't close the lid tight? Thanks for the help.
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Old 10-21-2010, 11:25 AM   #6
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Electric Outlet Outside Letting in Water


In-Use or Bubble cover (which is a type of in-use) is required by code, not optional. In-use means you can keep the cover closed while things are plugged in.

Here are some pics of a bubble in-use cover and a non-bubble in-use cover:


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