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2. 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.

3. Knob-and-tube wiring - Wikipedia

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

   For several decades, electricians could choose between K&T wiring, conduit, armored cable, and metal junction boxes. 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 ...

4. Electrical wiring - Wikipedia

   en.wikipedia.org/wiki/Electrical_wiring

   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 circuits are required.

5. Orangeburg pipe - Wikipedia

   en.wikipedia.org/wiki/Orangeburg_pipe

   The early 1900s brought tremendous expansion of the telephone, telegraph and electrical industries, along with subway construction along the eastern seaboard. This expansion in installation of electrical and telecommunications wiring within buildings and subway tunnels brought with it a rising demand for fiber conduit to run it in.

6. Thermoplastic-sheathed cable - Wikipedia

   en.wikipedia.org/wiki/Thermoplastic-sheathed_cable

   During the "rough in" stage of a wiring project, TPS cable has been run through holes in wooden supports and protective metal plates have been fastened in place. Each of the current carrying conductors in the "core" is insulated by an individual thermoplastic sheath, coloured to indicate the purpose of the conductor concerned.

7. Bonding jumper - Wikipedia

   en.wikipedia.org/wiki/Bonding_jumper

   [2] Some codes require a bonding jumper to be pulled into non-metallic conduit or in electrical metallic tubing that may be exposed to corrosion or mechanical damage. In North American electrical codes, an important bonding jumper is found in main electrical panels, where the system neutral conductor is connected to earth ground. This must be ...