A basic electrical receptacle with two holes for two-pronged plugs is referred to as a 2-plug/top , sometimes known as an ungrounded plug/top. A grounded plug/pin, also referred to as a three-plug/top, has three-pin . While still useful for much electrical equipment, 2-plug sockets are being phased out in favor of more contemporary 3-plug grounded plug/top because they lack the additional safety that grounding offers. It has a grounding hole, which adds another layer of protection by directing electrical faults to the ground, lessening the chance of shocks, and improving electrical safety.
2-Plug: A basic electrical receptacle with two Pin's for two-pronged plugs is referred to as a 2-plug/top, sometimes known as an ungrounded plug/top. While still useful for much electrical equipment.
3-Plug: A 3 - Pin Plug/Top—also referred to as a three-pronged or grounded Plug/Top — is a more sophisticated and secure electrical receptacle. It is the norm in contemporary electrical installations and provides a grounding pin as an additional safety element. Three-pronged plugs, which have two pins for live and neutral and a third pin grounding pin, fit into three-plug sockets, which have three holes.
By sending excess electrical current (EARTHING), such as would occur in a short circuit, directly to the ground, the grounding pin acts as a crucial safety precaution. This lowers the risk of electrical fires brought on by malfunctioning appliances and helps to prevent electrical shocks to users.