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  2. NEMA connector - Wikipedia

    en.wikipedia.org/wiki/NEMA_connector

    The 50 A (and 5-50) receptacles look like bigger versions of the 5-15 A. 6-15R and 6-20R receptacles are usually manufactured on the same assembly line as "Industrial" or "Commercial" grade 5-15R and 5-20R receptacles, with all 4 receptacles sharing the same "triple wipe" T contacts behind the varying faceplates.

  3. Electrical wiring in North America - Wikipedia

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

    In 240-volt applications not requiring a neutral conductor, the white wire may be used as the second hot conductor, but must be recolored with tape or by some other method. [ citation needed ] Four-wire flexible equipment connection cords have red as the fourth color; unlike older European practices, color-coding in flexible cords is the same ...

  4. AC power plugs and sockets - Wikipedia

    en.wikipedia.org/wiki/AC_power_plugs_and_sockets

    Today, sockets without switch are allowed, but it is a requirement that the sockets have a cavity to prevent touching the live pins. ... 240V 20-, 30- and 50-amp ...

  5. Mains electricity - Wikipedia

    en.wikipedia.org/wiki/Mains_electricity

    A 50 Hz ±5 Hz vibrating-reed mains frequency meter for 220 V The world's first public electricity supply was a water wheel driven system constructed in the small English town of Godalming in 1881. It was an alternating current (AC) system using a Siemens alternator supplying power for both street lights and consumers at two voltages, 250 V for ...

  6. Camlock (electrical) - Wikipedia

    en.wikipedia.org/wiki/Camlock_(electrical)

    Camlock is generally used where temporary connections of 3-phase and/or more than 50 A are needed. Applications include connecting large temporary generators or load banks to distribution panels or building disconnects. Common scenarios include testing, emergencies, temporary special events, and traveling stage shows with large lighting and ...

  7. Power supply - Wikipedia

    en.wikipedia.org/wiki/Power_supply

    A modern computer power supply is a switch-mode power supply that converts AC power from the mains supply, to several DC voltages. Switch-mode supplies replaced linear supplies due to cost, weight, efficiency and size improvements. The diverse collection of output voltages also have widely varying current draw requirements.

  8. AC adapter - Wikipedia

    en.wikipedia.org/wiki/AC_adapter

    The advent of switch-mode power supplies has allowed adapters to work from any AC mains supply from 100 to 240 V with an appropriate plug; operation from standard 12 V DC vehicle and aircraft supplies can also be supported. With the appropriate adapter, accessories, and tips, a variety of equipment can be powered from almost any source of power.

  9. Single-phase electric power - Wikipedia

    en.wikipedia.org/wiki/Single-phase_electric_power

    If heating equipment designed for a 240-volt system is connected to two phases of a 208-volt supply, it will produce only 75% of its rated heating effect. Single-phase motors may have taps to allow their use on either 208-volt or 240-volt supply.

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