Higher than 1 ohm to 10 ohm

Should not be more than one ohm

Greater than 10 ohm to 100 ohm

Greater than 100 ohm

Not less than 1 m

Not less than 1.5 m

Not less than 2.0 m

Not less than 2.5 m

Not less than 2.0 mm

Not less than 2.5 mm

Not less than 3.15 mm

Not less than 6.5 mm

By increasing the dia of pipe

Connecting number of earth electrode in parallel

By increasing the depth of earth pit

By connecting insulated cables

Commercial buildings

Industries

Generating station

Domestic buildings