Given: 3-phase motor: type = squirrel cage; 440 volts, 3 phase; 30HP; name plate = NEC rating; duty = continuous; design letter = 9; service factor = 0. A fuse protects the branch circuit supplying the motor. The size of the circuit would be the smallest size sufficient for starting current of a motor and to carry the load. A non-time delay fuse to protect the circuit of this motor would have a standard rating of ___ amps.

Given: 3-phase motor: type = squirrel cage; 440 volts, 3 phase; 30HP; name plate = NEC rating; duty = continuous; design letter = 9; service factor = 0. A fuse protects the branch circuit supplying the motor. The size of the circuit would be the smallest size sufficient for starting current of a motor and to carry the load. A non-time delay fuse to protect the circuit of this motor would have a standard rating of ___ amps.