The standard single-phase AC service is normally rated 120/240-volt, 3-wire.
Because of the main bonding jumper connection between the grounded, common-return, neutral conductor and the grounding-electrode / equipment-grounding system, _________ volts can be measured between either ungrounded bus or any ungrounded circuit conductor and the metal raceway or other metal enclosure housing the circuit conductors, or between either ungrounded bus or any ungrounded circuit conductor and exposed building metal, metal piping systems, or air-handling ductwork.
A) both 240 and 120
B) any of the answers
C) 240
D) 120
Show Answer
Answer:D
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