brother
Senior Member
A question was asked about a breaker tripping for a fire pump. Its a 1600amp breaker and its my understanding unless there is a short circuit, it should not be tripping, it is supposed to handle the locked rotor current indefinitely plus 100% of the other pump related accessories 2014 NEC 695.4(2). The fire pump is a 200hp 460volt Code G motor. I know usually the lrc is around 6 times the flc of the motor in most cases. Its been a while since I had to do these calculations, but isn't something wrong with the breaker tripping like it is when there is no direct short found? The overload amps should have never been reached to tripped the breaker in my opinion.