Equipment earthing is a connection done through a metal link between the body of any electrical appliance, or neutral point, as the case may be, to the deeper ground soil. The metal link is normally of MS flat, CI flat, GI wire which should be penetrated to the ground earth grid.

Protection:
(a) Safety of personnel
(b) Safety of equipment
(c)Prevent or at least minimize damage to equipment as a result of flow of heavy currents.
(d) Improvement of the reliability of the power system.