WIRING INSTALLATION AND EARTHING - Practice Mode
1) Which location the service connection supply leads to be connected at consumer main board?
Correct Answer: Energy meter
2) What is the permissible leakage current in domestic wiring installation?
Correct Answer: 1/5000 x Full load current
3) Which instrument is used to test new domestic wiring installation?
Correct Answer: Megger
Explanation:
The Megger is the instrument uses for measuring the resistance of the insulation. It works on the principle of comparison, i.e., the resistance of the insulation is compared with the known value of resistance. If the resistance of the insulation is high, the pointer of the moving coil deflects towards the infinity, and if it is low, then the pointer indicates zero resistance. The accuracy of the Megger is high as compared to other instruments.
Megger is used to test the new wiring installation.