I had the power go out for a few seconds at my house earlier today. Everything was working fine beforehand but after the power came back, half the stuff in my house wasn't working anymore including ALL of my 240V appliances. I checked the power coming to the main breaker (2 pole) from the meter and both legs read ~120V before the breaker. After the breaker, one leg read 120V and the other was 0V. I went back in the house for a few minutes and the stove and refrigerator came back on and the lights that weren't working came back on but were very dim. I went back out and checked the power again and still got 120V before the breaker on each leg, but then the pole that was reading 0V before now read 78V. After a little while all the lights came back on to full power so I'm assuming everything is back to 120V now.
I'm going to get someone out this week to replace the main breaker if necessary. In the meantime, can someone explain how a breaker can pass less than what's being supplied to it? Why would the one leg only be getting 78V? I was under the impression that a breaker was just a contactor?
Submitted July 17, 2016 at 07:22AM by Jeremiah_Guy http://ift.tt/2a05Lg1 electricians
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