Question

what is the importance of earthing?

Answer 1

Earthing is very necessary to transfer sudden electrical charges such as overloading and lightning to the earth without causing any harm. Without earthing houses will be prone to short-circuit.

Answer 2

Earthing is the process of creating an alternative path for the flow of fault/excessive currents safely into the ground in the presence of minimal resistance or impedance. The primary purpose of earthing is to reduce the risk of serious electric shock from current leaking into uninsulated metal parts of an appliance, power tool, or other electrical devices. In a properly earthed system, such leaking/fault current is carried away harmlessly while tripping the fuse. Earthing also provides protection from large electrical disturbances like lightning strikes and power surges. It also aids in the dissipation of hazardous static electrical charges. Although most electrical systems have fuses or circuit breakers for protection against a fault current, the human body may be fatally electrocuted by a current of less than one ampere which is well below the point at which a fuse . Earthing helps minimize such hazards from occurring. Hence, good and permanent efficient Earthing is an integral part of any electrical system as it is directly related to the safety of human life as well as the equipment.