ELECTRICAL ENCYCLOPEDIA

AC Power Plugs Definition   AC power plugs and sockets are devices for removably connecting electrically operated devices to the power supply. Electrical plugs and sockets differ by country in voltage and current rating, shape, size and type of connectors. The types used in each country are set by national standards. Generally the plug is the movable connector attached to an electrically operated device's power cord, and the socket is a fixture on equipment or a building structure. Plugs have male circuit contacts, while sockets have female contacts. The plug has protruding prongs, blades, or pins that fit into matching slots or holes in the socket. A wall-mounted socket is also called a receptacle, outlet, or power point. It is enclosed by a cover variously called a wall plate, face plate, outlet cover,socket cover, or wall cover.  continue.. Basic Types of Electrical Plugs   When using a grounding adapter, always attach the U-shaped piece of metal on the adapter to the screw