SOLUTION

The materials used in pipe earthing are as below

(i) GI pipe of 38 dia and 2-2.5 m length. The pipe is drilled many holes of 12 mm diameter.

(ii) The earth wires of 8 SWG of GI are fastened to the top section of the pipe with nut bolts.

(iii) 12.7mm diameter earthing GI pipe (earth wire is connected with this pipe.)

(iv) 1m length GI pipe of 19mm diameter which is used to fill, water around earth pipe.

(v) Salt and wood charcoal mixture (for moisture)

(vi) Washer and socket of 12.7mm GI

(vii) Funnel to fill water

(viii) Cast iron cover 30cm × 30cm sizes to cover the earthing.