How to fix the vertical supports of the cable tray to the cable tray itself

Cables in a vertical cable tray can be securely fixed using binding tape, hooks, ladder or spiral methods, with attention to cable size, weight, and heat dissipation.

Common Fixing Methods

Binding Tape Method Thread binding tape through the cables and attach it to the inner wall of the tray. This method is simple and works well for small to medium cables, but it is not suitable for very large or heavy cables. Hook Method Install hooks along the inner wall of the tray and hang the cables on them.

This method is ideal for large or heavy cables, providing strong support, but requires additional processing to install the hooks. Ladder Method Arrange cables along a trapezoidal track and secure them with binding tape. This method is suitable for large cables and ensures even distribution along the tray, but the tray must be compatible with ladder-style supports.

Spiral Method Wrap cables along a spiral track and fix them with binding tape. This method is effective for large cables and allows for organized vertical stacking, but requires specialized spiral tracks.

Best Practices

Firm Fixation: Ensure cables are tightly secured to prevent detachment or sliding, which could create safety hazards. Cable Organization: Keep cables tidy and avoid disorderly arrangements to maintain accessibility and airflow. Heat Management: Vertical stacking can increase heat accumulation.

Avoid over-tightening ties and consider de-rating cables if multiple circuits are stacked. Professional Input: Consult experienced electricians or engineers to verify that the chosen method meets safety standards and does not compromise cable performance. System Compatibility: Use components designed for the specific cable tray system to ensure structural integrity and compliance with standards like BS EN 61537.

Additional Considerations

Avoid using the tray as a walkway or support for personnel, as this can damage cables and compromise safety. For very large or critical installations, consider vertical rail systems with hooks that support cables independently of ties, reducing the risk of over-tightening and insulation damage. Always select the fixing method based on cable size, weight, and the number of cables to maintain proper spacing and airflow.

By following these methods and best practices, cables can be safely and efficiently fixed inside vertical cable trays while maintaining organization, accessibility, and compliance with safety standards.