An electrician connects one terminal of the megger to the conductor and the other terminal to the earth. It is evident that he is trying to find:
- Earth fault
- Open circuit fault
- Short circuit fault
- Insufficient data
Correct answer: 1. Earth fault
Explanation: In current scenario, the electrician is troubleshooting earth fault.
There are many cases, when the conductor of a cable comes in contact with earth, such case is technically termed as earth fault or ground fault.
To identify this fault, one terminal of the megger is connected to the conductor and the other terminal connected to earth. If the megger indicates zero reading, it means the conductor is earthed. The same procedure is repeated for other conductors of the cable.