One of our accounts has a 3 pole 400 Amp brkr tripping. One of our guys went to get the numbers off the brkr and ordered a new one, looped it at 320 Amps. I am going there Sat to install it, not even sure if breaker is bad, but there seems to be no fault or overload and we need to do something fast, as the plants offices are part of the load served.
Have you seen breakers just go bad so they trip well below their rating?
It's a GE breaker, 208 volt. I always scoffed at people's description of a "weak breaker", but this sounds like the best way to describe this one. It's tripping 3-4 times daily.
