The Ladder Tray features light, rugged, tubular steel construction. It is designed for mechanical support and strain relief in long runs of cable and creates a smooth gradual bend for cable. According to the National Electrical Code standard of the United States, a cable tray is a unit or assembly of units or sections and associated fittings forming a rigid structural system used to securely fasten or support cables and raceways. Several types of tray are used in different. Before selecting a cable tray, consider the following key factors: Cable Type and Volume: Determine the number and type of cables to be supported. Environmental Conditions: Assess indoor or outdoor usage, exposure to moisture, chemicals, or extreme temperatures. It's strong, durable, and can withstand a lot of wear and tear. Mild steel is a cost - effective option for. us-trations without notice. Integrity in Every Transaction: We. A cable tray is a structured mechanical support system used in the electrical wiring of buildings and other structures to organize and secure insulated power, control, and communication cables.