Just a final thought. How old is your DC? Could you have a motor failing causing electrical noise in the ground leg? Seems odd the only time you have trouble is when its turned on.
Type: Posts; User: Ken Sully
Just a final thought. How old is your DC? Could you have a motor failing causing electrical noise in the ground leg? Seems odd the only time you have trouble is when its turned on.
I agree with Jim.
I you have two different grounds you will end up with dissimelar grounds and current can flow between them. Make suer your system is tied to the same ground. Not one from the house...