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 two ungrounded busses (single-phase, line-to-line loads), or by all three of the ungrounded busses (3-phase loads) in the service equipment will operate at the higher phase-to-phase or line voltage of _________ volts.
A) none of the answers
B) 208
C) 120
D) 480
Show Answer
Answer:B
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