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  2. 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].

  3. Serving area interface - Wikipedia

    en.wikipedia.org/wiki/Serving_area_interface

    The SAI provides the termination of individual twisted pairs of a telephony local loop for onward connection back to the nearest telephone exchange (US: "central office" (CO)) or remote switch, or first to transmission equipment such as a subscriber loop carrier multiplexer and then to the exchange main distribution frame (MDF).

  4. Utility box - Wikipedia

    en.wikipedia.org/wiki/Utility_box

    Utility box may refer to: A toolbox; Pattress, a box that houses electrical sockets, switches, or other fixtures, also known as an electrical box Junction box, a box that houses electrical connections; Electrical enclosure, a cabinet-sized box housing electrical equipment or connectors Pad-mounted transformer

  5. Distribution board - Wikipedia

    en.wikipedia.org/wiki/Distribution_board

    A distribution board (also known as panelboard, circuit breaker panel, breaker panel, electric panel, fuse box or DB box) is a component of an electricity supply system that divides an electrical power feed into subsidiary circuits while providing a protective fuse or circuit breaker for each circuit in a common enclosure.

  6. Twist-on wire connector - Wikipedia

    en.wikipedia.org/wiki/Twist-on_wire_connector

    Twist-on wire connectors are a type of electrical connector used to fasten two or more low-voltage (or extra-low-voltage) electrical conductors. They are widely used in North America and several European countries in residential, commercial and industrial building power wiring, but have been banned in some other jurisdictions.

  7. Plugboard - Wikipedia

    en.wikipedia.org/wiki/Plugboard

    Control panels simplified the changing of electrical connections for different applications, but changing most tabulator's use still required mechanical changes. The IBM 407 was the first IBM tabulator that did not require such mechanical changes; all the 407's functions were electrically controlled and were completely specified by the ...

  8. Wiring closet - Wikipedia

    en.wikipedia.org/wiki/Wiring_closet

    Many types of network connections place limits on the distance between end user equipment, such as personal computers, and network access devices, such as routers. [citation needed] These restrictions might require multiple wiring cupboards on each floor of a large building. The inside of a wiring closet at a small public university.

  9. Power box - Wikipedia

    en.wikipedia.org/wiki/Power_box

    A power box (USA) or feeder pillar (UK) is a cabinet for electrical equipment, mounted in the street and controlling the electrical supply to a number of houses in a neighborhood. A power box is simply a layman's term for a transformer , cutout enclosure, or other enclosure used in conjunction with underground electrical distribution.

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