According to the 2014 National Electric Code® (NEC), any listed optical fiber cable is acceptable for a tray application. While there are several specific types of listings for power cables, specifically for tray applications, there is no equivalent tray rating for optical fiber cables. Cable trays. Indoor cables can be installed in raceways, cable trays above ceilings or under floors, placed in hangers, pulled into conduit or innerduct or blown though special ducts with compressed gas. The installation process will depend on the nature of the installation and the type of cable being used. OSP cables are generally loose tube, ribbon or slotted core design. Strength members must be strong enough to absorb. Mark fiber optic cable clearly to prevent accidental damage. Our tray-rated cables are used in a variety of indoor and outdoor environments such as manufacturing plants, oil refineries and platforms, utilities, substations, under.
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