An Electrician Tests a Three-Way Switching Circuit

Multiple Choice

An electrician tests a three-way switching circuit.The lighting load can be turned OFF and then ON at each of the three-way switch locations.However, when one three-way switch toggle is left in the up position, toggling the other three-way switch does not cause the lighting load to come on.The likely cause is __________.

A) an open grounding path
B) an open grounded path
C) the traveler wires are incorrectly connected to the traveler terminals on the switch
D) there is no electrical power at the switch