Motor Protection and Sizing Standards

what article deals with OL protection of continuous duty motors

• 430.52

• 430.22

• 430.32

• 430.110

According to the NEC. the max fault protection using a inverse time trip breaker and feeding a squirrel cage motor is

(a)  

Motor conductors shall be sized no less than (a)   of the NEC FLC

Refer to article 430.110. Disconnects have to be sized to at least (a)   of the motors FLC

Refer to article 430.102. Motor disconnecting means shall be located (a)  

what is the FLC of a 75 HP motor fed with 208vac

(a)  

what is the FLC of a single phase 10 Hp motor fed with 230vac?

(a)  

what is the proper Nema Size starter for a 75 HP motor fed with 480 VAC

(a)  

what is the required wire size to feed following motor

HP-30

Voltage - 230

FLA-78

Amb.-40C

SF. 1.35

(a)  

what size fuse would be adequate to use as fault protection for a 75 HP 3 phase motor fed with 480vac?

(a)