Generally, standard trays require supports every 6 to 10 feet, while heavy-duty, long-span trays can handle distances of up to 20 feet between supports. To determine the proper spacing, consult the manufacturer's load capacity chart, which accounts for the total weight of the. Setting up an efficient cable tray access path is crucial for ensuring that maintenance personnel can safely and effectively access and maintain electrical systems. This includes: Needs Analysis: Assess the current and future demands of the system to properly size the tray. Consider the type and quantity of cables, as well as expansion needs. These systems, made from metal or plastic, are open structures designed to support electrical conductors, ensuring proper organization and safety.