Trough Heater Tripping Circuit Breaker-- Thoughts?
I'm trying to reach the electrician to see when he can come take a peek, but thought in the meantime, maybe someone here might know what's going on. I have two trough heaters (one in each paddock) and they're plugged into their own GFI outlets at the fence (wiring is run underground from the fence to the barn). We have a breaker box in the tack room.
I noticed one heater wasn't working a month or so ago, and since the GFI wasn't tripped, I just figured it finally conked out on me since it was several years old. Bought another heater and put it in. Then a few days later, I realized that the trough was frozen again. The GFI wasn't tripped but the breaker was. I reset the breaker and it's been fine for a few days at a time, then it trips again (presumably when it gets cold enough overnight to run the heater). I'm concerned not only about the trough freezing, but also about safety-- I'm paranoid about fire.
I'm trying to figure out if I have a bad GFI or what. I've never had this problem in the past, have used the same type of heaters for about the past 5 years and nothing has changed about the set up. Thoughts?