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  2. NEMA connector - Wikipedia

    en.wikipedia.org/wiki/NEMA_connector

    The 5-20R receptacle has a T-shaped neutral hole, to accept both 5-15P and 5-20P plugs. An acceptable alternative version of the 5-20R receptacle has a rectangular slot that will only accept 5-20P plugs. The 5-30 and 5-50 are physically larger, with 1 in (25.4 mm) between power pins; 5-30 also has an L-shaped neutral blade. [17]

  3. Electrical wiring in North America - Wikipedia

    en.wikipedia.org/wiki/Electrical_wiring_in_North...

    Lighting and power receptacle circuits in North American systems are typically radial from a distribution panel containing circuit breakers to protect each branch circuit. [8] The smallest branch circuit rating is 15 amperes, used for general purpose receptacles and lighting.

  4. Industrial and multiphase power plugs and sockets - Wikipedia

    en.wikipedia.org/wiki/Industrial_and_multiphase...

    The contacts in the plug are simple cylinders (sleeves), while the pin contacts in the receptacle have the spring arrangement to hold contact pressure, the reverse of the IEC 60309 type connectors. All contacts are the same diameter. Originally metal construction was used, but now they are also made with plastic shells.

  5. National Electrical Code - Wikipedia

    en.wikipedia.org/wiki/National_Electrical_Code

    240 V receptacle faces. The 1999 Code required that new 120/240 volt receptacles, such as those for electric ranges and dryers, be grounded also, which necessitates a fourth slot in their faces. Changes in standards often create problems for new work in old buildings. A 120 volt combination AFCI/GFCI receptacle

  6. IEC 60320 - Wikipedia

    en.wikipedia.org/wiki/IEC_60320

    A variety of different kinds of IEC 60320 plugs and sockets. IEC 60320 Appliance couplers for household and similar general purposes [1] is a set of standards from the International Electrotechnical Commission (IEC) specifying non-locking connectors for connecting power supply cords to electrical appliances of voltage not exceeding 250 V (a.c.) and rated current not exceeding 16 A. [1 ...

  7. AS/NZS 3112 - Wikipedia

    en.wikipedia.org/wiki/AS/NZS_3112

    Australasian standard three pin plug, with part insulation on the Active/Line and Neutral pins. AS/NZS 3112 is the harmonised/joint Australian and New Zealand Standard for AC power plugs (male) and sockets (female).

  8. AC power plugs and sockets: British and related types

    en.wikipedia.org/wiki/AC_power_plugs_and_sockets:...

    Britain pre-war had used a combination of 2A, 5A, and 15A round pin sockets. In an appendix to the main report (July 1944), the committee proposed that a completely new socket-outlet with a fuse in the plug to protect an appliance's flexible cord should be adopted as the "all-purpose" one socket and plug domestic standard.

  9. IEC 60309 - Wikipedia

    en.wikipedia.org/wiki/IEC_60309

    IP67 plug and receptacle. IEC 60309-2 connectors come in IP44 (splash-proof), IP67 (waterproof) and IP66/IP67 (jet-proof/waterproof) variants. In all cases, the rating applies when detached or mated, but not during the mating process. The more common IP44 variant features a spring-loaded hinged cap over the socket.