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

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

    The protective-earth pin is a rectangular cross section 8.0 mm by 4.0 mm, 22.3 mm long and with a centre line 22.2 mm from the line/neutral pin centre line. The dimensions were originally specified in decimal inches with asymmetric tolerances and redefined as minimum and maximum metric dimensions in BS 1363:1984.

  3. Edison screw - Wikipedia

    en.wikipedia.org/wiki/Edison_screw

    Edison screw (ES) is a standard lightbulb socket for electric light bulbs. It was developed by Thomas Edison (1847–1931), patented in 1881, [1] and was licensed in 1909 under General Electric's Mazda trademark. The bulbs have right-hand threaded metal bases (caps) which screw into matching threaded sockets (lamp holders).

  4. Incandescent light bulb - Wikipedia

    en.wikipedia.org/wiki/Incandescent_light_bulb

    Inch Details "Standard" lightbulb: A60 E26: A19 E26 ⌀60 mm (~⌀19/8 in) A series bulb, ⌀26 mm Edison screw: Candle-flame bulb: CA35 E12: CA11 E12 ⌀35 mm (~⌀11/8 in) candle-flame shape, ⌀12 mm Edison screw Flood light: BR95 E26: BR30 E26 ⌀95 mm (~⌀30/8 in) flood light, ⌀26 mm Edison screw Halogen track-light bulb: MR50 GU5.3 ...

  5. A-series light bulb - Wikipedia

    en.wikipedia.org/wiki/A-series_light_bulb

    Other sizes with a data sheet in IEC 60064 are A50, A55, A67, A68, A71, A75, and A80. Another common A-series light bulb type is the A15 bulb which is commonly used in the US for appliances and ceiling fans. The A15 bulb is 15 ⁄ 8 in (1 + 7 ⁄ 8 in; 48 mm) wide at its widest point and 3.39 inches tall.

  6. AC power plugs and sockets - Wikipedia

    en.wikipedia.org/wiki/AC_power_plugs_and_sockets

    The pin length is the same as in the Chinese version. The earthing pin length is 21.4 mm (0.843 in) for the 10 A version and 21.8 mm (0.858 in) for the 20 A version. On the plugs, the pole length is 18.2 mm (0.717 in) for the 10 A version and 17.8 mm (0.701 in) for the 20 A version.

  7. Fluorescent-lamp formats - Wikipedia

    en.wikipedia.org/wiki/Fluorescent-lamp_formats

    One of the first diameters of fluorescent lamps, with the 15W T12 and 20W T12 having been introduced in 1938. These aren't as efficient as newer lamp options. [6] For T2–T12 and T17, the number indicates the tube diameter in 1⁄8 inches, e.g. T2 → 2⁄8 in and T17 → 17⁄8 in.