On a 3-phase AC, 4-wire, 208Y/120-volt building or other-structure electrical-power distribution system, any electrical utilization equipment supplied by any one of the three ungrounded busses and the common grounded neutral conductor in the service equipment will operate at the lower single-phase, phase-to-neutral, or
just “neutral voltage” of _________ volts.
A) 480
B) none of the answers
C) 208
D) 120
Show Answer
Answer:D
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