In technical terms, Electrical Earthing can be defined as the process of transferring the immediate discharge of the electrical energy directly to the Earth with the help of the low-resistance wire. Furthermore, the gigantic size of the Earth paves a path for the safe discharge of the electric charge. The Earth, being a good conductor of electricity, acts as a convenient path for the flow of electrons that escape the insulation. To answer our initial question, the third pin in the plug is actually the “Earth” or “Ground” connection of the electrical appliance. A safety measure devised to prevent people from getting shocked if the insulation inside electrical devices fails is called Earthing.
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