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  2. BS National Beehive - Wikipedia

    en.wikipedia.org/wiki/BS_National_Beehive

    The main boxes are 18 + 1 ⁄ 8 in (460 mm) square in footprint: the standard brood boxes being 8 + 7 ⁄ 8 in (230 mm) tall, and the shallow super 5 + 7 ⁄ 8 in (150 mm) tall. The main walls are 3 ⁄ 4 in (19 mm) thick. BS National standard (brood) box, with frames shown through cutaway (two frames removed, to show detail)

  3. Pattress - Wikipedia

    en.wikipedia.org/wiki/Pattress

    External pattress boxes: power and data sockets. A pattress or pattress box or fitting box (in the United States and Canada, electrical wall switch box, electrical wall outlet box, electrical ceiling box, switch box, outlet box, electrical box, etc.) is the container for the space behind electrical fittings such as power outlet sockets, light switches, or fixed light fixtures.

  4. CEE 7 standard AC plugs and sockets - Wikipedia

    en.wikipedia.org/wiki/CEE_7_standard_AC_plugs...

    CEE 7 is a standard for alternating-current plugs and sockets.First published in 1951 by the former International Commission on the Rules for the Approval of Electrical Equipment (), it unified standards produced by several continental European countries.

  5. 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.

  6. Electrical drawing - Wikipedia

    en.wikipedia.org/wiki/Electrical_drawing

    An electrical drawing is a type of technical drawing that shows information about power, lighting, and communication for an engineering or architectural project.Any electrical working drawing consists of "lines, symbols, dimensions, and notations to accurately convey an engineering's design to the workers, who install the electrical system on the job".

  7. 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.

  8. Junction box - Wikipedia

    en.wikipedia.org/wiki/Junction_box

    An electrical junction box (also known as a "jbox") is an enclosure housing electrical connections. [1] Junction boxes protect the electrical connections from the weather , as well as protecting people from accidental electric shocks .

  9. AS/NZS 3112 - Wikipedia

    en.wikipedia.org/wiki/AS/NZS_3112

    From this it may be seen that any plug can be inserted into a socket outlet of the same or higher rating but cannot be inserted into a socket outlet of lower rating. Hence, a 10 A plug will fit into all of the five types of socket outlets, a 15 A plug will fit into all except a 10 A (and so on) while a 32 A plug will fit only into a 32 A socket ...

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