What are socket outlets and plugs?

Socket outlets and plugs are common terms for mains connectors. They carry mains voltage, normally either 120 volts as in North America or 230 volts as used in most of the world outside the Americas.

The socket outlet is also known as a "receptacle" in North America and simply "socket" in the UK. They are the wall mounted connectors used to deliver electrical power to the consumer.

The plug is normally the cable mounted connector that mates with the wall mounted socket.

Countries and regions have their own type of connector and while they are sometimes compatible, many countries have connectors that are unique to their own country.

Because they are such a common item, there are many terms in use for them, some are technically correct while others are wrong but still widely understood. Socket outlets are often referred to as "plug socket" or "wall plug" in the UK. Both are confusing terms although understood by all.