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2. Electrical conduit - Wikipedia

   en.wikipedia.org/wiki/Electrical_conduit

   PVC conduit has long been considered the lightest in weight compared to steel conduit materials, and usually lower in cost than other forms of conduit. [3] In North American electrical practice, it is available in thirteen different size and wall thicknesses, [4] with the thin-wall variety only suitable for embedded use in concrete, and heavier ...

3. 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.

4. Thermoplastic-sheathed cable - Wikipedia

   en.wikipedia.org/wiki/Thermoplastic-sheathed_cable

   Prior to 2013 IS 201-4:2001 ( I.S. 201 part 4: PVC and Low Smoke Halogen Free Sheathed cables for fixed wiring) permitted both the UK style of twin and earth, and also a version with a CPC with a cross-section equal to that of the main conductors and insulated in green and yellow inside the full length of the cable.

5. Electrical wiring - Wikipedia

   en.wikipedia.org/wiki/Electrical_wiring

   Electrical wiring is an electrical installation of cabling and associated devices such as switches, distribution boards, sockets, and light fittings in a structure. Wiring is subject to safety standards for design and installation.

6. Power cable - Wikipedia

   en.wikipedia.org/wiki/Power_cable

   The armor may be made of steel or aluminum, and although connected to earth ground is not intended to carry current during normal operation. Electrical power cables are sometimes installed in raceways, including electrical conduit and cable trays, which may contain one or more conductors. When it is intended to be used inside a building ...

7. Heat-shrink tubing - Wikipedia

   en.wikipedia.org/wiki/Heat-shrink_tubing

   Polyolefin heat-shrink tubing typically shrinks 2:1 diametrically, [10] [9] but high-grade polyolefin heat-shrink is also available with a 3:1 ratio. [7] Polyolefin tubing may withstand being touched with a soldering iron. [10] PVC tubes are usually lower cost than other materials. [1]