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  2. Cable reel - Wikipedia

    en.wikipedia.org/wiki/Cable_reel

    A cable reel is a round, drum-shaped object such as a spool used to carry various types of electrical wires. [1] Cable reels, which can also be termed as drums, have been used for many years to transport electric cables, fiber optic cables [2] and wire products.

  3. Utility pole - Wikipedia

    en.wikipedia.org/wiki/Utility_pole

    the batch and type of wood used; A date of the last official inspection; An alphanumeric designation e.g. DP 242 where DP is an initialism of Distribution Point; If relevant, a red D plate meaning 'Dangerous' and indicating that the pole was structurally unsafe to climb or due to its proximity to other hazards [23]

  4. Bobbin - Wikipedia

    en.wikipedia.org/wiki/Bobbin

    A bobbin or spool is a spindle or cylinder, with or without flanges, on which yarn, thread, wire, tape or film is wound. [1] Bobbins are typically found in industrial textile machinery , [ 2 ] as well as in sewing machines , fishing reels , tape measures , film rolls , cassette tapes , within electronic and electrical equipment, and for various ...

  5. Knob-and-tube wiring - Wikipedia

    en.wikipedia.org/wiki/Knob-and-tube_wiring

    Compared to modern electrical wiring standards, these are the main technical shortcomings of knob-and-tube wiring methods: never included a safety grounding conductor; did not confine switching to the hot conductor (the so-called Carter system prohibited as of 1923 places electrical loads across the common terminals of a three-way switch pair)

  6. Wire recording - Wikipedia

    en.wikipedia.org/wiki/Wire_recording

    The Minifon wire recorder was designed for stealth use and its accessories included a microphone disguised as a wristwatch. [8] Wire recording was also used in some aircraft flight recorders beginning in the early 1940s, mainly for recording radio conversations between crewmen or with ground stations. Because steel wire was more compact, robust ...

  7. List of power stations in Arizona - Wikipedia

    en.wikipedia.org/wiki/List_of_power_stations_in...

    Arizona electricity production by type This is a list of electricity-generating power stations in the U.S. state of Arizona , sorted by type and name. In 2021, Arizona had a net summer capacity of 27,596 MW through all of its power plants, and a net generation of 109,305 GWh. [ 2 ]

  8. Overhead power line - Wikipedia

    en.wikipedia.org/wiki/Overhead_power_line

    An overhead power line is a structure used in electric power transmission and distribution to transmit electrical energy along large distances. It consists of one or more conductors (commonly multiples of three) suspended by towers or poles.

  9. Spool - Wikipedia

    en.wikipedia.org/wiki/Spool

    Spool may refer to: Bobbin , a cylinder or reel on which a quantity of thread, yarn or wire is wound for use in a particular machine or device Cable reel , used to carry various types of electrical wires