Support Methods: Common support methods include trapeze hangers, which are used for ceiling suspensions, and cantilever wall brackets, which are mounted directly to walls for runs along vertical surfaces. The choice depends on the building structure and the planned tray route. maintain spacing or to keep cables in place when the tray is ect the minimum bend ra-dius for cables as they exit the bottom of the cable tray. 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 rungs provide a convenient anchor for tying down cables in vertical runs or where the positions of the cables must be maintained in horizontal runs. Ladder cable tray without covers provides for maximum air flow, dissipating. 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. IEEE 690 "Standard for the Design and Installation of Cable Systems for Class 1E Circuits in Nuclear Power Generating Stations" indicates: 12. Cable trays are a safe, durable, and cost-effective method of cable management for commercial and industrial applications.