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

Potential dividing method

Fall of potential method

Fall of resistance method

Current dividing method

AC is easily available

Protect the coils in the meter

Reduce the value of current in the meter

Avoid the effect of electrolytic Emf interference

One primary winding

Two primary windings

Three primary windings

Four primary windings