Common Cable Tray Climbing Angles

Cable trays can safely climb or descend using standard angle fittings, typically at 45° or 90°, with proper support and installation practices.

Standard Climbing Angles

Cable trays are designed to change elevation using vertical bends or angled fittings. Common climbing angles include: 45° bends: Often used for gradual elevation changes, reducing stress on cables and maintaining easier cable pulling during installation. 90° bends: Used for sharp vertical rises or descents, typically at the end of a tray run or when space is limited.

Adjustable fittings: Some connectors, like the WKV 35 angle connector, can be adjusted on-site from 45° to 90° to accommodate specific installation requirements.

Installation Considerations

Support spacing: Vertical or inclined sections require adequate support to prevent sagging or excessive stress on cables. Supports should be installed according to manufacturer guidelines and local standards. Cable stress: Steeper angles increase the risk of cable damage during installation.

Gradual slopes (e.g., 45°) are preferred for long vertical runs to minimize bending stress. Fitting selection: Use fittings designed for the specific tray type and side height. Ensure all fasteners and mounting materials are properly installed.

Compliance: Installations should follow standards such as BS EN 61537 for cable tray systems, ensuring mechanical integrity and safety.

Practical Tips

Avoid using cable trays as ladders or walkways; they are intended solely for cable support. For long vertical climbs, consider intermediate horizontal landings or supports to reduce cable tension. Verify that the chosen angle does not exceed the manufacturer's recommended limits for the tray type and load.

By following these guidelines, cable trays can safely accommodate vertical or inclined runs while maintaining cable integrity and system reliability.