Technician A says that the third prong on a North American 120V AC electric cord always indicates a three-phase voltage. Technician B says that the third prong on a 120V AC electric cord can be broken off if an extension cord is used. Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

The third prong on a North American 120V AC electric cord is a ground prong, not an indicator of three-phase voltage. It is a safety feature and should not be broken off.

Technician a Says That the Third Prong on a North