Adding Ground To An Ungrounded Circut? - Electrical - DIY Chatroom Home Improvement Forum

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Old 06-05-2012, 08:25 PM   #1
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Adding ground to an ungrounded circut?

Here's my situation.. I have an existing basement electrical circuit.. One outlet, then two light switches going to junction boxes then basement lighting..

I wanted to modify / move the basement lighting, so I wired new outlets out of the junction boxes for plug in shop lights..

All of the new wiring is grounded - Wired up the junction - incoming power to the junction is grounded.. Wired it all up..

Went to test the outlets to make sure all was done right.... No Ground..

Checked all the wiring to find:
The first outlet (before the light switch) is grounded.
The wire from the first outlet to the light switches was not grounded - with no ground wire available.
The lights I'm installing warn to make sure I'm using grounded outlets..

Well the light switches are dry walled in so re-running that power wire to the switches is a huge pain the ass..

Can I run a single wire (same gauge is the circuit) in line with the circuit wires from the first grounded outlet of the circuit, to each junction box to ground the rest of the circuit?

See attached file for an illustration of what I'm wanting to do..
I've read that to ground an ungrounded Circuit, you can run a wire from each outlet to the breaker box to retrofit a ground. Essentially, I've done 9/10ths of that already.. I just need to bridge the gab so to speech..

I want to make this as right as I can, but I'd hate to have to tear into the drywall to fix it.

Is this a safe solution?

Thanks a bunch ~Ian
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Old 06-05-2012, 08:29 PM   #2
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Re-feed the receptacles from the grounded JB and be done with it.


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Old 06-05-2012, 08:42 PM   #3
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Originally Posted by electures View Post
Re-feed the receptacles from the grounded JB and be done with it.
I concur, refeed the receptacles, and just use the wires going to the switches as switch legs, and disconnect the old ungrounded feed going to the switches....

Last edited by stickboy1375; 06-05-2012 at 10:27 PM.
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