I am workin in this house in the city of Rochester, I first got called to this customers house because a duplex circuit on the second floor of his house went out. I trouble shooted the circuit to be a bad breaker. I replaced the breaker and everything returned to normal for about 3 months, Last night I got a call about 1:30am he said that the circuit went out again and that there was water coming out between the breakers. he said he took of the panel cover and started to soak up some of the water that came out between the breakers. I told him not to play with anything until I got there. When I got there I noticed there was no water, drain lines or anything that could cause water to get into the panel box. My question is, where the hell could the water come from in the panel box. Everything on the outside including the service entrance wires are all dry, there are no water marks or anything like that. The only thing I could narrow it down to is condensation. I am not sure, Please let me know what you guys think. Thanks Tom.