Optical cable is usually placed in a 25 to 40 mm inside diameter (ID) sub-duct which is placed into an existing larger diameter communications conduit. Most communications conduits can be fitted with three or four sub-ducts. Fiber optic cables have provided a more optimal use of available underground conduit space because of its small cable diameter and the much higher communications traffic capacity of. A conduit cable installation involves placement of one or more optical cables inside a preinstalled conduit that runs between access points. Conduit installation can consist of newly installed conduits or pre-existing. Conduits act as protective channels that house fiber optic cables, safeguarding them against external threats such as moisture, excessive heat, pressure, and UV exposure. The conduit ensures the safe and reliable functioning of fiber optic networks, reducing the risk of signal degradation, physical. The choice of conduit depends on the installation environment, type of fiber optic cable, and application.
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