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Question DetailsAsked on 6/28/2012

Is conduit needed to wire an outdoor GFIC outlet?

Just had a new paver patio installed and I need to relocate my outdoor outlet that is wired from a subpanel in an unattached garage. The previous owners were terrible DIY'ers: the previous wiring for the GFIC outlet was/is indoor electrical wire buried about 6 inches deep and connected with indoor electrical twist caps - no conduit, no covered junction box and no other protection from rain or other elements. The connection was placed beneath a 1-by-1-foot landscaping stone - I don't know who thought this was a good idea, but it's not the first time we've encountered hidden shoddy workmanship from these guys. So now I want to redo the work correctly: Do I absolutely need to run the new wire through conduit? Or is there a type of wire that's rated for outdoor applications?

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Voted Best Answer

I recommmed grey PVC conduit buried 18" deep. This is 18" to the top of the conduit so your trench should be 19-20 deep" Use a PVC outlet box, if OK asthetically, so you won't have to worry about grounding the box.
Run 3 wires, Line, Neutral and Ground. Connect Ground to the GFCI recptacle and your ground wiring is done.

You can also use Underground Feeder cable buried to 24" but then you have to consider how to protect it when it comes up out of the ground.
Underground Feeder is good for pedistals where the cable comes up through and is protected and concealed by the base of the pedistal but it is not so great if there is a significant above-ground cable run.


Answered 8 years ago by Kestrel Electric

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