Question 441Electricity & Electronics - QMED

The correct answer is C. All three of the motor feeder conductors are passed through the window and a connection is made between the ground fault relay sensor terminals and the two wire terminals in the upper right hand corner of the sensor as shown in the illustration. This is because a ground fault sensor requires all current-carrying conductors associated with the circuit to pass through the sensor window in order to accurately detect any ground fault current. Having all three conductors pass through the sensor ensures the ground fault detection system can properly monitor the circuit. The other options are incorrect because they either do not pass all three conductors through the sensor window or do not properly connect the ground fault relay sensor terminals to the sensor, which would prevent the system from functioning as intended.