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[Solved]: A three phase 230 V design B motor has branch circ
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(Solved): A three phase 230 V design B motor has branch circuit short circuit and ground fault protection prov ...



A three phase 230 V design B motor has branch circuit short circuit and ground fault protection provided by 90 amp circuit breaker. The magnetic motor starter is operated by a start stop station located 10 feet from the controller separate overcurrent protect protection for the control circuit is not provided in the 90 amp circuit breaker is the only protection for the control circuit. This is permitted provided the copper control circuit wires with 75° insulation and terminals are not smaller than the size



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