You are so right gentlemen, it is a fire pump I am talking about. Sorry to be so vague. There seems to be another case where you only need short circuit protection and I seem to remember seeing this exemption for wiring associated with metering. It only specifies short circuit protection and I am still looking for the method of calculating short circuit protection for say # 12 wire or in the case of my fire pump, #1 copper wire. In the case of our fire pump we are asked to size the fuse or CB to carry locked rotor current. Does this automaticly provide short circuit protection for the conductor?
