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As it's a safety factor, earthing is essential and mandatory. It's an electricalconnection between the exposed metallic parts of an electrical appliance or installation and the earth, regarded to have zero potential. dangerous level of potential or voltage that endangers the user's life.
If there is a leakage of electricity into the machine or the electrical device, the excess charges will be disposed of through the handling system, It is a protection system for users of electrically powered machines
Safety - for proper grounding on any electrical works / services
In an electrical installation or an electricity supply system an earthing system or grounding system connects specific parts of that installation with the Earth's conductive surface for safety and functional purposes. The point of reference is the Earth's conductive surface, or on ships, the surface of the sea
