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?
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