Installing ladder-type cable trays requires careful planning, proper support structures, precise assembly, and organized cable placement to ensure safety and efficiency.

Planning and Preparation

Before installation, plan the tray route according to your site layout, considering clearance, load capacity, and cable separation requirements. Review approved shop drawings to determine tray lengths, locations, and accessory needs. Inspect all materials for damage and ensure they meet project specifications. Store trays horizontally on a flat surface with timber supports to prevent warping or moisture damage .

Support Structure Installation

Install support structures such as trapeze hangers, brackets, or wall-mounted supports according to manufacturer guidelines and local building codes. Supports should be spaced appropriately, typically 1.5 to 3 meters apart, depending on tray load and type. Ensure all supports are level, secure, and capable of bearing the total weight of the tray and cables, including future expansions .

Tray Assembly

Assemble ladder tray sections by connecting them with bolts, screws, or rivets, ensuring alignment and stability. Pay attention to corners, joints, and connections. Install accessories such as bends, tees, crossbars, and covers as needed, making sure they do not obstruct cable routing . For long runs, use cable tray rollers to facilitate smooth cable placement and prevent kinks .

Cable Laying

Lay cables neatly within the tray, separating them by voltage or function. Use cable ties or straps to secure cables while leaving enough slack for expansion or future adjustments. Ladder-type trays allow airflow, reducing heat buildup, so avoid overcrowding .

Safety and Best Practices

• Avoid cutting or drilling structural members without approval .
• Ensure all personnel are qualified and familiar with electrical hazards and local codes .
• Verify that tray load does not exceed manufacturer specifications, typically 318–340 kg per hanger with a maximum support spacing of 3.6 meters .
• Regularly inspect and maintain trays to prevent sagging, corrosion, or damage . By following these steps—planning, supporting, assembling, and organizing cables—you can achieve a safe, durable, and efficient ladder-type cable tray installation.