I had a very strange situation that was similar to this. My brother-in-laws mother called me and said that her electric was doing funny things. Her light by her dryer would come on dimly when the dryer was turned on. There were a few other things as well. Her panel box was in the garage and she had a stove in the garage aw well. She would cook stuff out there and create lots of steam. Well years of this took its toll and one leg of a 50 amp 2 pole breaker was tripped but the other leg was stuck and would not trip. I replaced this breaker and the problem went away. So I guess I would say check all 2 pole breakers. Then turn off breakers one at a time and see if the problem goes away. Then look into that circuit.
my guess is there is a loose neutral somewhere in the main box or could be outside at the weatherhead . turning on the stove gives a return path and since it is a resistive load meaning generating heat the load is disipated thru the heat in the element more element brighter lights .
just a guess but should be fairly easy to troubleshoot
I just reread the post. He said that they have 2 panels, one new and the old one. Since the old panel was the main panel box and not a sub panel could the neutral and grounds be tied together causing this? How is the old panel now fed?
Looks like we may never know what the outcome of this problem is!
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