Question { RRB, 26380 }

why earth hole size is biggest in plug point?

Answer

The resistance of the Conductor is depending upon the area
of cross section of conductor i.e(R=6L/A), so we are
connected earth wire to the big one terminal of the socket
point as well as 3 pin top. To flow the fault current
through the terminal to earth easily.

Question { 5431 }

what can i do line to line fault

Answer

Cutt off the power supply and take the megger and test the
insulation restance between two lines or conduct the short
circuit test between conductors then then rectified the
fault