8 SWG

10 SWG

14 SWG

20 SWG

High resistance

Very low resistance

Medium resistance

Very high resistance

Use new electrode

Use new coal and salt layer

Use new earth wire

Use water and maintain wet condition

Reducing the pit depth for earthing

Increasing the depth of earth pit

Decreasing the length of the electrode

Connecting number of earth electrode in parallel

Megger

Ohm meter

Wheatstone bridge

Earth tester