If you are having "random" trips on your circuit breakers, you might check your heaters. I replaced an Ebo-Jager last week because the breaker on my DJ strip started tripping about every hour or so. The heater was about 4-5 years old. I had the same problem last year with another old heater. Different brand, the name of which I don't remember. The one last year failed more slowly than the Ebo, and every couple weeks or so, the breaker would trip some time during the night. I originally thought I had a problem with my ballasts because my lights go on at night. The trips seemed random, so I thought I was getting some kind of spike or surge due to intermittent failures in the ballast. I switched the ballasts to a different strip and still had breaker trips. The only thing left on that strip was the skimmer, return pump, and heaters. The heater seemed to be the most likely cause, and it turned out It was the heater coming on during the cooler evening temperatures. Any other tips?