Cable trays must be installed as a complete system, except mechanically discontinuous segments between cable tray runs, or between cable tray runs and equipment as permitted. NEC section 300-8 does not permit any tube, pipe, or equal for water, air gas, drainage, steam, or any service other than electrical in raceways or cable trays containing. The cable support lengths and fittings can basically be designed as cable trays, cable ladders or mesh cable trays, in which cables are routed. Fittings can, on the one hand, be used for horizontal or vertical changing of the routing direction or, on the other, to change the height or width of the. Cable tray systems provide a safe, organized, and flexible method for supporting insulated conductors and cables in commercial and industrial electrical installations. ” What does this mean? Cable trays support cable the way that roadway bridges. This specification applies to the installation of cable trays and the laying of cables within trays for newly built or expanded general industrial and civil buildings with power supply voltages up to 10kV. Basis of Construction All installation work shall be carried out strictly in accordance.
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