The guide contains all the information needed to design and install a safe and compliant cable tray system: different types of cable trays, available materials and finishes, installation instructions, electrical code references and more. Cable Tray Supports: These include trapeze hangers, center-span supports, and wall brackets that anchor the entire system to the building structure (ceiling, wall, or floor). Ladder Type: The strongest design, featuring side. association representing the major electrical equipment manufac-turers in the U. The Cable Tray ng standards, performance standards, test standards and application in this document have been tested extens ompetent professional en completely installed, without damage either to conductors or. cable trays are equivalent. 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. We act with honesty, integrity and effectiveness to achieve the quality, durability, safety and reliability that our industry demands. They provide easy access while maintaining a clutter-free environment.