AC Power Plugs and Sockets

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This article is about mains power connection devices used in domestic and light commercial environments. For other types, see Industrial and multiphase power plugs and sockets.

AC power plugs and sockets connect electric equipment to the alternating current (AC) power supply in buildings and at other sites. Electrical plugs and sockets differ from one another in voltage and current rating, shape, size, and connector type. Different standard systems of plugs and sockets are used around the world.

Plugs and sockets for portable appliances became available in the 1880s, to replace connections to light sockets with wall-mounted outlets. A proliferation of types developed for both convenience and protection from electrical injury. Today there are about 20 types in common use around the world, and many obsolete socket types are found in older buildings. Coordination of technical standards has allowed some types of plug to be used across large regions to facilitate trade in electrical appliances, and for the convenience of travellers and consumers of imported electrical goods.

Some multi-standard sockets allow use of several types of plug; improvised or unapproved adaptors between incompatible sockets and plugs may not provide the full safety and performance of an approved socket-plug combination.

Concepts and terminology

History

Application issues

Types in present use

Comparison of standard types

Adaptors

Unusual types

Single phase electric stove plugs and sockets

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Open main menu

Search

AC power plugs and sockets

Language

Download PDF

Watch

Edit

This article is about mains power connection devices used in domestic and light commercial environments. For other types, see Industrial and multiphase power plugs and sockets.

AC power plugs and sockets connect electric equipment to the alternating current (AC) power supply in buildings and at other sites. Electrical plugs and sockets differ from one another in voltage and current rating, shape, size, and connector type. Different standard systems of plugs and sockets are used around the world.

Plugs and sockets for portable appliances became available in the 1880s, to replace connections to light sockets with wall-mounted outlets. A proliferation of types developed for both convenience and protection from electrical injury. Today there are about 20 types in common use around the world, and many obsolete socket types are found in older buildings. Coordination of technical standards has allowed some types of plug to be used across large regions to facilitate trade in electrical appliances, and for the convenience of travellers and consumers of imported electrical goods.

Some multi-standard sockets allow use of several types of plug; improvised or unapproved adaptors between incompatible sockets and plugs may not provide the full safety and performance of an approved socket-plug combination.

Concepts and terminology

History

Application issues

Types in present use

Comparison of standard types

Adaptors

Unusual types

Single phase electric stove plugs and sockets

章 66: AC Power Plugs and Sockets

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