Cable tray systems are structural components used to support insulated conductors and control, instrumentation, and communication cables. They are typically installed overhead, along walls, or under raised floors in electrical rooms, industrial plants, process areas, and. Through NEMA and the Cable Tray Institute numerous articles, standards, and other general guidance can be found regarding the proper use and installation of cable tray systems. A rung spacing of 6 to 9 inches (150 to 230 mm) is preferable when. Among the various cable types, tray cables are a preferred solution for robust, adaptable, code-compliant wiring. Whether you're an engineer, contractor, facilities manager or simply curious, this ultimate guide provides an in-depth understanding of tray cables, covering their types, standards. What is a cable tray? A cable tray is a metal or non-metal structure used to lay electrical cables and wires, serving to support, protect, and guide the cables. Cable trays are used as an alternative to open wiring or electrical conduit systems, and are commonly used for cable management in. These systems provide an efficient and adaptable solution for managing a wide range of cables, including power cables, control cables, Ethernet, and fiber optic lines.