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Thread: change two prong to three prong outlet

  1. #1
    millwork specialist@home depot danl02026's Avatar
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    Default change two prong to three prong outlet

    hello all,
    I have had great advice from this site and I need it again.
    I have a two wire outlet in the attic . I have guitar amp that I want to put there. The amp has three prongs . Since running a ground to the water pipe is near impossible. But I know that I can put in a gfi outlet with "no equipment ground" . Can I put a 14 ga single wire from the ground screw on the outlet to the white neutral screw will that provide equipment ground?. Or is it code for massachusetts? Please help!!!!

  2. #2
    Plumber jimbo's Avatar
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    Whoa! Nope...can't do that!

  3. #3
    Retired Defense Industry Engineer jadnashua's Avatar
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    The whole idea of the safety ground is to have a TOTALLY independent safety path back to the breaker/fuse panel to ensure that the breaker/fuse will trip if there is a short. A jumper between the neutral and ground would NOT perform this safety feature. Use a GFCI recepticle, if you must emulate a ground there, or rewire the whole circuit. The GFCI essentially does the same thing, but electronically, rather than mechanically.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  4. #4
    millwork specialist@home depot danl02026's Avatar
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    Default two prong to three

    thank for the info ==I tried the gfi outlet but I was getting to much hum. I have used this setup in other settings . I guess Im pulling wires for the weekend...again thanks

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