The type G regular (British Standard 1363) involves utilization of a three-wire grounded and fused plug for all connections to the power mains. Two-wire appliances are not earthed, but they may have a plastic grounding pin which only serves to open the shutters in the outlet. Plugs and wall-mounted sockets https://connectorselectricaltypes90009.blogminds.com/everything-about-types-of-electrical-plugs-us-27092813