An electrician is testing a 20-ampere, 125-volt duplex receptacle with a voltage tester.The tester indicates 120 volts between the ungrounded slot and the grounded slot.The tester also indicates 0 volts between the ungrounded slot and the grounding slot.The likely cause is __________.
A) an open equipment-grounding path
B) reversed polarity at the receptacle
C) an open grounded circuit conductor
D) a short circuit in the cable feeding the receptacle

Question

Quizplus · Accepted Answer

The tester indicating 120 volts between the ungrounded slot and the grounded slot indicates that the hot and neutral wires are properly placed. However, the 0 volts between the ungrounded slot and the grounding slot indicates that the ground wire is not properly connected. This can be caused by reversed polarity at the receptacle, where the hot and neutral wires are switched, leading to a lack of proper ground connection.

An Electrician Is Testing a 20-Ampere, 125-Volt Duplex Receptacle with a Voltage