A few weeks ago I had the AC running (Mermaid 16000 BTU), and turned on the hot water heater. I hadn't done this in the past for fear of popping the main (30A)breaker. Well, the breaker did not pop, but after a while we started smelling burning plastic. Quickly shut down everything and went looking for the source. The breaker panel was quite warm to the touch, and the main breaker was hot. It was the source of the smell. I replaced it, inspected and tested the panel, and things seem to be running OK. I will no longer attempt to run AC and HW heater together, but am curious how many amps I was drawing. The Mermaid website says the AC draws about 12A. Maybe mine draws a few more (may be an older modeL). Does anybody know how many amps the stock (1992) hot water heater draws? My paperwork has no specs. Has anybody else had the burning breaker experience?