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2. Cable tray - Wikipedia

   en.wikipedia.org/wiki/Cable_tray

   Cable trays are used as an alternative to open wiring or electrical conduit systems, and are commonly used for cable management in commercial and industrial construction. They are especially useful in situations where changes to a wiring system are anticipated, since new cables can be installed by laying them in the tray, instead of pulling ...

3. Outside plant - Wikipedia

   en.wikipedia.org/wiki/Outside_plant

   Outside plant cabling, whether copper or fiber, is generally installed as aerial cable between poles, in an underground conduit system, or by direct burial. [2] Hardware associated with the outside plant must be either protected from the elements (for example, distribution frames are generally protected by a street side cabinet) or constructed ...

4. Manhole cover - Wikipedia

   en.wikipedia.org/wiki/Manhole_cover

   The base and cover are sometimes called "castings", because they are usually made by a casting process, typically sand-casting techniques. [1] Pick holes in manhole cover, Palo Alto, California, USA Manhole valve made in 2022. The covers usually feature "pick holes", into which a hook handle tool is inserted to lift them.

5. Cable grommet - Wikipedia

   en.wikipedia.org/wiki/Cable_grommet

   Cable grommets. A cable grommet is a tube or ring through which an electrical cable passes. They are usually made of rubber or metal. [1]The grommet is usually inserted in holes in certain materials in order to protect, improve friction or seal cables passing through it, from a possible mechanical or chemical attack.

6. Manhole - Wikipedia

   en.wikipedia.org/wiki/Manhole

   A manhole (utility hole, maintenance hole, [1] or sewer hole) is an opening to a confined space such as a shaft, utility vault, or large vessel. Manholes, typically protected by a manhole cover , are often used as an access point for an underground public utility , allowing inspection, maintenance, and system upgrades.

7. Electrical conduit - Wikipedia

   en.wikipedia.org/wiki/Electrical_conduit

   L-shaped bodies ("Ells") include the LB, LL, and LR, where the inlet is in line with the access cover and the outlet is on the back, left and right, respectively. In addition to providing access to wires for pulling, "L" fittings allow a 90 degree turn in conduit where there is insufficient space for a full-radius 90 degree sweep (curved ...