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  2. NEMA connector - Wikipedia

    en.wikipedia.org/wiki/NEMA_connector

    This may allow for one switched receptacle for a lamp, or for two separate supply circuits when heavy loads are anticipated. Two branch circuits may optionally share a common neutral wire terminating on duplex receptacles, a condition sometimes referred to as "split-wiring", "split-receptacle", [ 45 ] or "half-split".

  3. Electrical wiring - Wikipedia

    en.wikipedia.org/wiki/Electrical_wiring

    Electrical symbols for wiring [vague]. Electrical wiring is an electrical installation of cabling and associated devices such as switches, distribution boards, sockets, and light fittings in a structure.

  4. 3-way lamp - Wikipedia

    en.wikipedia.org/wiki/3-way_lamp

    A 3-way lamp, also known as a tri-light, is a lamp that uses a 3-way light bulb to produce three levels of light in a low-medium-high configuration. A 3-way lamp requires a 3-way bulb and socket, and a 3-way switch. In 3-way incandescent light bulbs, each of the filaments operates at full voltage. Lamp bulbs with dual carbon filaments were ...

  5. Underwriter's knot - Wikipedia

    en.wikipedia.org/wiki/Underwriter's_knot

    Underwriter's knot; Names: Underwriter's knot, Two-strand wall knot: Category: Stopper: Related: wall knot, crown knot: Typical use: electrical: Caveat: Note that the colors in this depiction do not match current practises in either the UK or the US, nor is this cable in keeping with current safety standards for electrical installations

  6. Electrical code - Wikipedia

    en.wikipedia.org/wiki/Electrical_code

    An electrical code is a term for a set of regulations for the design and installation of electrical wiring in a building. The intention of such regulations is to provide standards to ensure electrical wiring systems are safe for people and property, protecting them from electrical shock and fire hazards.

  7. Torchère - Wikipedia

    en.wikipedia.org/wiki/Torchère

    Today, torchère lamps use fluorescent, halogen, or LED light bulbs. Adjusting the pulse-width modulation in the electronic ballast can allow the fluorescent torchères to be dimmed. Halogen torchères usually came with a simple switch. Some more expensive models have a TRIAC dimmer circuit built into the stem. Early lamps with 300W bulbs ...

  8. LED lamp - Wikipedia

    en.wikipedia.org/wiki/LED_lamp

    A 230-volt LED filament lamp, with an E27 base. The filaments are visible as the eight yellow vertical lines. An assortment of LED lamps commercially available in 2010: floodlight fixtures (left), reading light (center), household lamps (center right and bottom), and low-power accent light (right) applications An 80W Chips on board (COB) LED module from an industrial light luminaire, thermally ...

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

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

    In some London schools built in the 1960s they were used as low-voltage AC sockets, typically 12 V, 5 A from a transformer serving one or more laboratories, for microscope lamps etc. Wylex plugs and sockets continued to be manufactured for several years after BS 1363 sockets became standard and were commonly used by banks and in computer rooms ...