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About Bob Sponaugle
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Just about any home wiring question. (not appliance repair) I have done all kinds of home wiring for myself, including adding a new breaker box, etc. Please, questions from North America only. Please be specific with details.

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Electrical Wiring in the Home - Home voltage too high

Expert: Bob Sponaugle - 11/5/2009

Question
I tested all my outlets with a VOM lat night and they are consitantly between 169-174VAC. Would that be the providor or an in-home wiring issue? The house only has a 100amp service panel.

Thanks for your assistance.

Answer
Hi.

You would need to check the power coming in at the panel (very carefully not to touch anything you shouldn't) to see what the power is coming in. If you have any shared neutral circuits, a loose neutral will cause an overvoltage on one circuit and undervoltage on the other. The same thing can happen to the whole house if the main neutral is loose. If it is more than 120 volts coming in, most likely the power company will need to fix it.

I hope this helps.

Bob

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This site answers questions related to home electrical wiring, home wiring, general electrical help,and other electrical questions related to aleternating current (AC). You can find help on the National Electical Code, home electrical issues, wiring electrical outlets, installing lighting, electrical grounding, and general electrical help for do-it-yourself projects not require an electrician. If you do not see your home electrical wiring question answered in this area then please ask your electrical wiring question here