What is Earthing in Electrical Terms?
In electrical terms, earthing, commonly known as grounding, refers to a system aiming to protect electrical wires and components from damage caused by sudden electrical power surges. Its main purpose is to reduce the risk of dangerous electrical shocks from uninsulated metal parts of an appliance or electrical device. Earthing systems also can prevent end users from electrical shocks in case of a short circuit occurs.
A solid copper grounding rod, also known as grounding electrode, connected to the main electrical panel by a single earth-grounding wire is the fundamental method of the household earthing electrical system. The system also protects electrical devices via a three-wire power plug. The grounding wire is connected to a circuit protection system and harmlessly carries electrical surge away to prevent electrocution of users. On some appliances, a grounding wire must be fastened to metal water pipes to prevent electrical shocks. Factories also use grounding systems to protect equipment and machinery from accumulating static electrical charges to ensure safety of workers against electrocution.