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If you find a voltage this high on a 120 volt circuit notify your utility company. If you are using a voltage tester of your own, make sure that it is on the proper scale and that the meter is calibrated for zero with no connection. This voltage is too high and could cause damage to devices that are connected to it. It may be a transformer malfunction on the system that feeds your home. Get it looked after right away.

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12y ago
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Q: What damage can be caused with 146 vac on a 120 vac household?
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