The distance between hangers should typically not exceed 1. 5 meters, although this can vary depending on the tray type and load. Fixed supports are critical for the overall stability and safety of the cable tray system. Cable ladder systems and cable tray systems shall be manufactured in accordance with BS EN 61537, channel support. 3. 1 Cable trays shall be sized (including 10% growth) as per the drawings and will accommodate all horizontal and/or backbone cabling within the Telecommunications Room as well as entering/existing the Telecommunications Room. The mechanical and electrical characteristics, tests, certifications, overall quality management, recommendations mentioned in this technical guide only apply to our own cable management ranges and cannot under any circumstances be transposed to si osure, overheating or. 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 trays are used for supporting insulated electrical cables for power and communication applications.