08/30/17: Motors and Transformers

Poll created by dvigstol Employee on Aug 31, 2017

What is the maximum standard size, inverse-time circuit breaker that can be used for short-circuit and ground-fault protection for a 480V, 3-phase feeder that supplies a specific fixed motor load with the following horsepower ratings: 25HP, 25HP, 10HP, 10HP, 10HP, 7.5HP. All motors operate at the same voltage characteristics as the feeder supplying them and starting current is not a problem.   

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