Sometimes truth is stranger than fiction.
Start at the breaker and work down the line checking voltage. Somewhere along the line you will find a bad connection. Start with tightening the screws on the breaker. Over the last two months I have found twice a loose connection at the panel solved the problem.
Start at the breaker and work down the line checking voltage. Somewhere along the line you will find a bad connection. Start with tightening the screws on the breaker. Over the last two months I have found twice a loose connection at the panel solved the problem.