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  2. Knob-and-tube wiring - Wikipedia

    en.wikipedia.org/wiki/Knob-and-tube_wiring

    When a generic power outlet was desired, the wiring could run directly into the junction box through a tube of protective loom and a ceramic bushing. Wiring devices such as light switches, receptacle outlets, and lamp sockets were either surface-mounted, suspended, or flush-mounted within walls and ceilings.

  3. NEMA connector - Wikipedia

    en.wikipedia.org/wiki/NEMA_connector

    Per UL Standard ANSI/UL 498, a receptacle (any color) with an orange triangle, is an isolated ground (IG) device, where the grounding pin of the receptacle is connected to ground independently of the frame of the receptacle and wiring outlet box. This is also a requirement of the National Electrical Code (NFPA 70), Article 406.

  4. History of AC power plugs and sockets - Wikipedia

    en.wikipedia.org/wiki/History_of_AC_power_plugs...

    The report found that "the harmonisation of plug and socket outlet systems in Europe, by introducing changes in national wiring legislations (would have) important transitional periods (above 75 years)", and that the cost to "replace the old socket-outlets (and the corresponding plugs of the appliances being used)" was estimated at 100 billion ...

  5. Three-prong adaptor - Wikipedia

    en.wikipedia.org/wiki/Three-prong_adaptor

    The ground tab is designed to be attached to the outlet faceplate screw, which is supposed to be connected to the building electrical ground. A cheater plug , AC ground lifter or three-prong/two-prong adapter is an adapter that allows a NEMA 5-15P grounding -type plug (three prongs) to connect to a NEMA 1-15R non-grounding receptacle (two slots).

  6. AC power plugs and sockets - Wikipedia

    en.wikipedia.org/wiki/AC_power_plugs_and_sockets

    BS 546, "Two-pole and earthing-pin plugs, socket-outlets and socket-outlet adaptors for AC (50-60 Hz) circuits up to 250 V" describes four sizes of plug rated at 2 A, 5 A (Type D), 15 A (Type M) and 30 A. The plugs have three round pins arranged in a triangle, with the larger top pin being the earthing pin.

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    Maker of the $60,000 foldable home has 3 factory buildings, 600+ houses built, and big plans to solve housing — you can become an investor for $0.80 per share today.

  8. Americans are exhausted by political news. TV ratings and a ...

    www.aol.com/americans-exhausted-political-news...

    Election news on CNN and MSNBC was taking up too much of Sam Gude's time before the election, said the 47-year-old electrician from Lincoln, Nebraska. Americans are exhausted by political news.

  9. Talk:Mains electricity by country/Archive 1 - Wikipedia

    en.wikipedia.org/wiki/Talk:Mains_electricity_by...

    Different shades of the colors for slightly differing voltages (approx. 220, 230, 240 volts or 110, 120 or 127 volts) I hope any further removal of these maps in favor of the old ones includes equally good reasons. (By the way, in case you find mistakes in one of the maps you can always use my discussion page.)