The main components of a cable tray system include tray sections, fittings, supports, and accessories. Each cable tray type performs a different function and comes in various materials such as aluminum, galvanized steel, and FRP. Non-Metallic What is Cable. en completely installed, without damage either to conductors or structural system use 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. A rung spacing of 6 to 9 inches (150 to 230 mm) is preferable when. An electrical cable tray is a type of containment system used to support insulated electrical cables for power distribution, control, and communication. Today, electrical cable trays have become an essential component in industrial and commercial construction, providing a quick, economical, and. The answer is simple: different cable characteristics and installation environments demand different tray designs. Cable weight, heat generation, bend radius, environmental exposure, and maintenance access all directly influence which cable tray type is technically appropriate and code-compliant. The work covered under this section consists of the furnishing of all necessary labor, supervision, materials, equipment, tests and services to install complete cable tray systems as shown on the drawings.