: The bonding of all non-current-carrying metal parts of equipment and installations to earth. This relates to the safety of human life, animals, and property, and is sometimes called “equipment earthing”.
By facilitating a high fault current, it triggers protective devices (like circuit breakers and fuses) to disconnect the faulty circuit immediately. ss 551 code of practice for earthing
Ensure that exposed conductive parts do not attain a dangerous potential during an insulation fault. : The bonding of all non-current-carrying metal parts