Engineering, 17.12.2019 00:31 91miketaylor
You are asked to look into adding a circuit for a new pump in the butler-carlton hydraulics lab. after some investigation of the electrical service in the building you find that there are a few voltage options; 120v, single-phase; 208v, single-phase; 208v, 3-phase, 277v, single-phase; 480v, 3-phase. which pump electrical choice would be the least economical in terms of first cost for electrical construction materials and overall electrical efficiency
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