I am having problems with 30A, 120V, Square D, GFCI breakers nuisance tripping at a campground. Here are the facts as I know them. There are five 100A, single phase, mains serving five separate loops. Each loop has six risers for campers to plug in to. Each riser has a 20A GFCI breaker serving a duplex, and a 30A GFCI breaker serving a 30A, 120V receptacle. The problem is only with the 30A breakers on only one loop. Between 7:30PM and 9:00PM on most evenings the breaker will trip. The breaker will not reset. If they take an adapter and plug in to the 20A receptacle it will work. The next morning they can reset the 30A and it will work fine. There are some HPS lights for a bathroom on this loop that were on a photo eye. I unhooked the eye and have the lights on all the time now. I do not know of anything else that is on this loop. Park maintenance has changed the breakers and I have checked all connections. No one is aware of anything that might be starting automatically at that time. They have had this problem intermittently for about a month with different campers. The day I was there, there was only one camper on that loop. I asked if they had any problems with the electric. They said that the power had blinked at about 8:00PM but the breaker did not trip.
Any Ideas? Thanks and have a happy Independence Day!
Any Ideas? Thanks and have a happy Independence Day!