134 Volts from Outlet

Fpbear II · 2007-01-09T07:34:16+00:00

I noticed that some appliances were running better when plugged into certain outlets. I am wondering what could cause the voltage difference. This is in a room where the previous owner installed four GFCI outlets coming from a dedicated subpanel. The measurements (with some loads still present) are:Pair 1:134V outlet A110V outlet BPair 2:113V outlet C127V outlet DI took off the face plates. The two pairs of outlets have a shared neutral, i.e. one white wire comes down from the wall and goes into both outlets. The other two wires in each outlet pair have the separate hots.. red wire goes into the hot in one outlet and black wire goes into the hot in the other outlet.I also took off the subpanel cover. Here is a picture with the wires clearly shown. It looks like each outlet has its own breaker: subpanel conduit goes all the way to the main service panel and I'm not sure where it connects at the service panel. The house was built in 1950 so the rest of the electrical is pretty old, but it this subpanel appears to be independent of the old wiring.I am wondering if it might be a mis-wiring at one of the outlets or something simple that I can fix myself. I have done a lot of electrical work at the previous house but I am not familiar with shared neutral circuits.Thanks!!

Jan 09, 2007 20 Replies

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Bob Vaughan 19 years ago

Fix the service entrance ground, but also have the power company check their ground at the transformer.

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134 Volts from Outlet

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