What is the Maximum Overload heater required, using a time-delay fuse to protect a 575 V, three-phase, insulation class B , 120 hp,  S.F. 1.0 squirrel-cage, continuous duty, ventilated AC motor with a nameplate full load current of 110.6 A?

What is the minimum size of conductor of a 3/4 hp, 208 V single-phase AC motor if the name plate FLA is 12.5 amps. The TTC is 60 degrees C?

Answer AWG

What is the minimum RW90 copper conductor size a 575 V, three-phase, insulation class A , 100 hp squirrel-cage, continuous duty, ventilated AC motor with a nameplate full load current of 96.8 A?

What maximum size of instantaneous-trip breaker would be used if the motor FLA is 78 amps. 

Motor (s) must be protected from a disconnect switch. The motor voltage is 575 volts, 3 phase, 100 FLA, TTC is 60 degree C, motor insulation is class "B". Switch is rated at 80%. cable to the motor is single conductor (free- air).

only use numbers in your answer, no units

a) 100 amps

b) 125 amps

c) 150 amps

d) 200 amps

What is the minimum T-90 copper conductor size of  a 575 V, three-phase, insulation class B 

, 125 hp

squirrel-cage, continuous duty, ventilated AC motor with a nameplate full load

current of 117 A?

If, for some reason, the fuse will not allow the motor to start, your fuse is time-delay type, and the motor FLA is 235 amps what would be the maximum fuse size you could use.

Motor supply conductor requires insulation temperature rating more than 75 degree C, the motor supply insulate conductors shall be not less than 1.2 meter long and the junction box 600 mm from any part of the motor, for motors rated less than 100 hp. 

What is the Maximum overcurrent fuse required, using a non-time-delay fuse to protect a 575 V, three-phase, insulation class B , 125 hp,  S.F. 1.0 squirrel-cage, continuous duty, ventilated AC motor with a nameplate full load current of 118 A?

Motor supply conductor requires insulation temperature rating more than 75 degree C, the motor supply insulate conductors shall be not less than 1.2 meter long and 600 mm from any part of the motor, for motors rated at 100 hp or more.