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The system of plug types using a single letter (from A to O) used here is from World Plugs, which defines the plug type letters in terms of a general description, without making reference to specific standards. Where a plug does not have a specific letter code assigned to it, then it may be defined by the style sheet number listed in IEC TR 60083.
The following 6 pages use this file: AC power plugs and sockets; Mains electricity by country; Talk:AC power plugs and sockets/Archive 4; Talk:AC power plugs and sockets/Archive 6; Talk:Mains electricity by country/Archive 1; Talk:Mains electricity by country/Archive 3
As early as 1885 a two-pin plug and wall socket format was available on the British market. By about 1910 the first three-pin earthed (grounded) plugs appeared. Over time other safety improvements were gradually introduced to the market. The earliest national standard for plugs and wall sockets was enacted in 1915 in the UK. [citation needed]
In older plug designs both blades were the same width, so the plug could be inserted into the receptacle either way around. Many plugs manufactured since 1948 are polarized; the neutral blade is 5 ⁄ 16 in or 7.9 mm wide, 1 ⁄ 16 in or 1.6 mm wider than the line blade, so the plug can be inserted only one way. Polarized 1-15P plugs will not ...
The CEE 7/16 standard sheet appears in Supplement 2 (June 1962) to the 1951 edition of CEE 7. The CEE 7/16 unearthed plug is used for low power Class II applications, it has two round 4 by 19 mm (0.157 by 0.748 in) pins, rated at 2.5 A. There are two variants.
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A conversion plug [83] is a special type of plug suitable for the connection of non-BS 1363-type plugs (to a recognized standard) to BS 1363 sockets. An example would be Class II appliances from mainland Europe which are fitted with moulded europlugs. Similar converters are available for a variety of other plug types.
The term plug is in general and technical use in all forms of English, common alternatives being power plug, [1] electric plug, [2] and (in the UK) plug top. [3] The normal technical term (in both British and International English) for an AC power socket is socket-outlet, [4] but in non-technical common use a number of other terms are used.