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2. Copper tubing - Wikipedia

   en.wikipedia.org/wiki/Copper_tubing

   Common sizes are 15 mm and 22 mm. [7] Other sizes include 18 mm, 28 mm, 35 mm, 42 mm, 54 mm, 66.7 mm, 76.1 mm, and 108 mm outside diameters. Tubing in 8 mm and 10 mm outside diameters is called a "micro bore" and is easier to install, although there is a slightly increased risk of blockage from scale or debris.

3. Electrical conduit - Wikipedia

   en.wikipedia.org/wiki/Electrical_conduit

   An electrical conduit is a tube used to protect and route electrical wiring in a building or structure. Electrical conduit may be made of metal, plastic, fiber, or fired clay. Most conduit is rigid, but flexible conduit is used for some purposes. Conduit is generally installed by electricians at the site of installation of electrical equipment.

4. Busbar - Wikipedia

   en.wikipedia.org/wiki/Busbar

   The busbar's material composition and cross-sectional size determine the maximum current it can safely carry. Busbars can have a cross-sectional area of as little as 10 square millimetres (0.016 sq in), but electrical substations may use metal tubes 50 millimetres (2.0 in) in diameter or more as busbars.

5. Electrical wiring - Wikipedia

   en.wikipedia.org/wiki/Electrical_wiring

   Insulated wires may be run in one of several forms between electrical devices. This may be a specialised bendable pipe, called a conduit, or one of several varieties of metal (rigid steel or aluminium) or non-metallic (PVC or HDPE) tubing. Rectangular cross-section metal or PVC wire troughs (North America) or trunking (UK) may be used if many ...

6. Knob-and-tube wiring - Wikipedia

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

   The conduit methods were known to be of better quality, but cost significantly more than K&T. [2] In 1909, flexible armored cable cost about twice as much as K&T, and conduit cost about three times the price of K&T. [6] Knob and tube wiring persisted since it allowed owners to wire a building for electricity at lower cost.

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8. File:Conduit House, Bolsover.jpg - Wikipedia

   en.wikipedia.org/wiki/File:Conduit_House...

   1/250 sec (0.004) F-number: f/8: ISO speed rating: 400: Date and time of data generation: 15:18, 1 October 2020: Lens focal length: 4.3 mm: Orientation: Normal: Horizontal resolution: 180 dpi: Vertical resolution: 180 dpi: File change date and time: 15:18, 1 October 2020: Y and C positioning: Co-sited: Exif version: 2.3: Date and time of ...

9. Waveguide flange - Wikipedia

   en.wikipedia.org/wiki/Waveguide_flange

   Because the working of a choke connection depends on the wavelength, its impedance can be zero at at most one frequency within the operating band of the waveguide. However, by making the gap extremely narrow, [1] [3] and the choke ditch relatively wide, [1] the input impedance can be kept small over a broad frequency band. For gap and ditch ...