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    emerald122's Avatar
    emerald122 Posts: 1, Reputation: 1
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    #1

    Jul 13, 2012, 06:56 AM
    How to run underground power source
    I am building a small waterfall in my backyard. Would like to know easiest and safest way to run power for the pump. There is a plug in about 10 yards away.
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
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    #2

    Jul 13, 2012, 07:30 AM
    Assuimng you need a 20 amp 120 volt circuit, you need to dig a trench, install either 1/2" or 3/4" PVC Schedule 40 conduit from existing outlet box to new outlet box, pull 3 - #12 THHN/THWN conductors, one black, one white, and one green.

    I will assume the existing outlet is already GGFI protected.
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