Which of the following voltage selections are reasonable in a large building with a 277/480 utility...
Which of the following voltage selections are reasonable in a large building with a 277/480 utility service? Select all that apply.
A. 208 V, 1-phase appliances
B. 277 V, 1-phase lighting
C. 277 V, 1-phase receptacles
D. 480 V, 3-phase motors
Homework Answers
here the supply voltage is 277/480 V, in this regard all the single phase appliances with 277V are reasonable as well as three phase voltage is 480 V appliances are also reasonable.
the voltage below 277/480 V selections will get high voltages which will affect the insulation of the loads leads to short circuits in system.
options are B , C, D
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