In an apartment building I was in there is a fire pump supplied from one of the house panels. It is a 20HP motor on a 208V 3Ø system. It is fed from a 100A breaker in one of the 225A house panels. I don't have any experience with fire pumps or their associated electrical but I'm curious if there is anything wrong with this situation. If I understand correctly, the breaker needs to be able to hold 6x FLC indefinitely. The pump breaker and even the house panel main breaker will not hold that current for very long. The fire pump controller is service entrance rated. Shouldn't the fire pump controller be fed from the service before the switchboard, panelboards, etc.? Is there something wrong with this or is there more to this that I am missing? Again, I have no experience with fire pumps. I just happened to notice this and I am curious. Thanks!