When the knife disconnecting means
The power supply in the motor- controls wiring laboratory is rated as a 3-phase, 4-wire 208Y/120-Volt branch circuit.
When the knife disconnecting means at a given lab station is closed, the lower phase-to-neutral supply voltage can be measured to any grounded metal enclosure or other surface at either the selector switch location, the motor-starter location, or the motor location, because ____________ at the point of power supply for the wiring lab station.
A) the equipment grounding means (conductor) is connected common to the Line 3 ungrounded circuit conductor
B) the equipment grounding means (conductor) is connected common to the Line 2 ungrounded circuit conductor
C) the equipment grounding means (conductor) is connected common to the Line 1 ungrounded circuit conductor
D) the equipment grounding means (conductor) is connected common to the neutral grounded circuit conductor
Show Answer
Answer:D
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