Vertical Fixing of Box-Type Cable Trays

Vertical installation of box-type cable trays requires secure wall or structural mounting using appropriate brackets, supports, and fasteners to ensure mechanical stability and compliance with standards. Key Considerations for Vertical Fixing1. Support and Mounting Elements Box-type cable trays must be supported using wall brackets, cleats, or channel supports designed to handle the weight of the tray and the cables it carries.

Supports should be spaced according to the tray manufacturer's recommendations, typically every 1. 5 to 2 meters for vertical runs, to prevent sagging or deformation. For heavy-duty installations, additional intermediate supports may be required.

2. Material and Corrosion Protection Cable trays are commonly made from steel, stainless steel, or aluminum, with finishes such as hot-dip galvanization, pre-galvanization, or powder coating to resist corrosion. For vertical installations exposed to moisture or harsh environments, stainless steel or coated steel is preferred to maintain long-term durability.

3. Fastening Methods Vertical trays are fixed using anchors, bolts, or screws suitable for the wall or structural material. In concrete walls, expansion anchors or chemical anchors are commonly used, while in steel structures, threaded bolts or clamps are appropriate.

The fasteners must be rated for the mechanical load, including the weight of cables and potential dynamic forces. 4. Alignment and Stability Ensure the tray is plumb and aligned vertically.

Use level tools during installation and secure the tray at multiple points along its height. For long vertical runs, consider lateral bracing or cross supports to prevent twisting or lateral movement. 5.

Compliance with Standards Installations should comply with DIN EN 61537 or BS EN 61537, which define requirements for cable support systems, including load capacity, spacing, and mechanical stability. Vertical trays must also allow for safe cable routing without exceeding bending radii or obstructing access. 6.

Safety and Practical Tips

Do not use cable trays as ladders or walkways. Ensure all components are compatible and tested as a system. Consider thermal expansion and contraction; allow for slight movement if trays are long.

Avoid overloading the tray beyond its rated capacity.

Summary

Vertical fixing of box-type cable trays involves secure wall or structural mounting, proper spacing of supports, corrosion-resistant materials, and compliance with relevant standards. Using manufacturer-recommended brackets and fasteners ensures mechanical stability, safety, and long-term reliability of the cable management system. Proper alignment, bracing, and load management are essential for safe and effective vertical installations.