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  2. Gang box - Wikipedia

    en.wikipedia.org/wiki/Gang_box

    Gangbox (also gang box) is a colloquial term utilized in the construction industry, referring to a toolbox or workbox that can be accessed by multiple workers.. A gang box is a type of electrical box or junction box in building materials, which is a purpose-built enclosures that serve as a centralized hub for housing and organizing multiple electrical devices, such as switches, outlets, or ...

  3. IEC 60228 - Wikipedia

    en.wikipedia.org/wiki/IEC_60228

    Comparison of SWG (red), AWG (blue) and IEC 60228 (black) wire gauge sizes from 0.03 to 200 mm² to scale on a 1 mm grid – in the SVG file, hover over a size to highlight it. In engineering applications, it is often most convenient to describe a wire in terms of its cross-section area, rather than its diameter, because the cross section is directly proportional to its strength and weight ...

  4. NEMA enclosure types - Wikipedia

    en.wikipedia.org/wiki/NEMA_enclosure_types

    Below is a list of NEMA enclosure types; these types are further defined in NEMA 250- Enclosures for Electrical Equipment. Each type specifies characteristics of an enclosure, but not, for example, a specific enclosure size. Note that higher numbers do not include the lower-numbered tests. For example, types 3, 4 and 6 are intended for outdoor ...

  5. Standard wire gauge - Wikipedia

    en.wikipedia.org/wiki/Standard_wire_gauge

    No. 7/0, the largest size, is 0.50 in. (500 thou or 12.7 mm) dia., No. 1 is 0.30 in. (300 thou), and the smallest, No. 50, is 0.001 in. (1 thou or 25.4 µm). The system as a whole approximates an exponential curve, plotting diameter against gauge-number (each size is a approximately a constant multiple of the previous size). The weight per unit ...

  6. Junction box - Wikipedia

    en.wikipedia.org/wiki/Junction_box

    A small metal, plastic or fiberglass junction box may form part of an electrical conduit or thermoplastic-sheathed cable (TPS) wiring system in a building. If designed for surface mounting, it is used mostly in ceilings, concrete or concealed behind an access panel—particularly in domestic or commercial buildings [2].

  7. NEMA size - Wikipedia

    en.wikipedia.org/wiki/NEMA_size

    Download as PDF; Printable version ... NEMA (National Electrical Manufacturers Association) contactors and motor starters are rated by sizes. These sizes are grouped ...

  8. Electrical conduit - Wikipedia

    en.wikipedia.org/wiki/Electrical_conduit

    Some types of conduit are approved for direct encasement in concrete. This is commonly used in commercial buildings to allow electrical and communication outlets to be installed in the middle of large open areas. For example, retail display cases and open-office areas use floor-mounted conduit boxes to connect power and communications cables.

  9. 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)

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