The standard single-phase AC service is normally rated 120/240-volt, 3-wire.
Any electrical utilization equipment supplied by the two ungrounded busses in the service equipment will operate at the higher phase-to-phase, or “line voltage” of _________ volts.
Any electrical utilization equipment supplied by either one of the two ungrounded busses and the common grounded neutral conductor in the service equipment will operate at the lower phase-to-neutral, or just “neutral voltage” of _________ volts.
A) 240; 120
B) 120; 240
C) 120; 120
D) 240; 240
Show Answer
Answer:A
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