Which of the following is the cheapest method of earthing?
Which of the following is the cheapest method of earthing?
Right Answer is:
Pipe Earthing
SOLUTION
Rod earthing: It is the cheapest method of earthing and is employed in sandy areas. In this method, a copper rod is hammered directly into the ground, and no excavation work is required. The earthing lead is joined to this rod with the help of nuts and bolts.