ECN Forum Forums General Topics of the Trade General Discussion Area Apprentice Electrician Need help

Multiple circuits indicate to me that it is a main power supply issue. Service, Main Panel or Sub panel if present.

I had a customer some years ago with the same issue. After several visits I had no idea what the problem was.
The customer made a comment that "it seems to happen on windy days".
So I went back and visually inspected the incoming power from the service all the way back to the transformer. While standing under the XFMR I heard a cracking sound. (electrical) short.
Called POCO and they found that the service wires on the secondary had worn enough for them to short to each other intermitantley.

Moral of the story. "It's not always your problem, it could be theirs"

If the customer would not have mentioned windy days, this would still be happening. Go outside and have a good look around. But don't touch anything you are not trained to work on......Good Luck