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Electrical Idiot needs advice [message #298096] Sat, 26 March 2016 13:00 Go to previous message
jknezek is currently offline  jknezek   United States
Messages: 1057
Registered: December 2007
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Senior Member
Let me start this out by saying I am the title. 12 volt? No problem, but 120 AC? Anything beside very, very basic confuses me.

So here's my problem. The backsplash behind our stove (typical 26' GMC floorplan) was rotted. I decided to replace it with a nice piece of aluminum diamond plate. Got everything down and took out the outlet that is to the left of the sink. Hmm... three hots, three negatives, three grounds. Labeled my wires. Finished disassembly and then began reassembly.

After much irritation I reinsulated (tell me that the original insulation looks the way it does because of 40 years of wear and tear and not some stoned h.s. drop out that GM hired to pretend the foam insulating gun was his six shooter while he sprayed it randomly around?), got the diamond plate slid in, riveted it back to get the correct curve, put back the overhead wire runner and window trim.

Now the electrical. I had precut the diamond plate for the box and it was perfect. Forced the wires through with liberal use of words my kids aren't allowed to hear, and thought I hooked it up as per my labels. Test... Nothing. No 120 AC in the whole coach. Checked it was plugged in, checked that I flipped the breakers the right way, checked that I had hooked it up. Nothing.

Is there a specific order to the wires that I missed? I'm using a 20 amp capable outlet and hooking two hots to the brass top screw, one hot to the brass bottom screw and the corresponding negatives in the same spots on the other side. The grounds are twisted up tight and one is attached to the ground screw.

Does it matter if I have the hot/negative from the box on the top screws? Do two sets need to be on the top or the bottom? I really am an electrical idiot and despite several google searches can't seem to find a wiring diagram that discusses this problem.

I did see an interesting diagram that put all three hots into a wire nut with one wire coming out to the plug, all three negatives into a wire nut with one wire coming out to the plug, and all three grounds in one nut coming out to the plug. I've never seen anything wired that way before. Is that the answer?

Thanks,
Jeremy Knezek
1976 Glenbrook
Birmingham, AL

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