Horizontal cable trays converted to vertical cable trays

Horizontal cable trays can be converted to vertical runs using specialized vertical fittings, bends, and support systems that maintain cable organization and protection.

Using Vertical Fittings and Bends

One of the most efficient methods is to use vertical cable tray fittings, such as the Helix™ fitting, which allows smooth transitions from horizontal to vertical orientation. These fittings enable installation close to walls, provide enhanced cable protection in confined spaces, and secure cables within the fitting for organized runs. Standard vertical bends, T-pieces, and crossovers can also be used to change the routing direction while maintaining proper support.

Vertical Rack Systems

For installations requiring vertical stacking of horizontal runs, vertical rail systems with hooks can be employed. These systems allow cables to hang securely, reducing reliance on cable ties to maintain position. This method prevents over-tightening of ties and ensures cables remain supported even if ties fail.

However, simply turning a horizontal tray on its side is not recommended, as it can lead to cable sliding, piling, and reduced ampacity due to deeper stacking.

Support and Mounting Considerations

Vertical cable trays require adequate support elements such as wall brackets, suspended supports, or center suspensions to attach the tray securely to walls or structural elements. The spacing between supports should be carefully calculated to handle the weight of the cables and any additional environmental loads like wind or vibration. Mounting plates may also be used for junction boxes or device supports.

Software and Design Tools

When designing vertical cable tray runs in software like Revit, certain settings may be greyed out for horizontal trays. Workarounds include using vertical tray placement options or upgrading to the latest software version to enable proper orientation.

Best Practices

Always use fittings designed for vertical transitions rather than improvising with horizontal trays. Ensure cable de-rating is considered due to potential heat buildup in vertical stacks. Maintain organized cable routing to prevent tangling and facilitate maintenance.

Consult plant electricians or engineers for proper installation and compliance with electrical codes. By combining vertical fittings, proper support structures, and careful planning, horizontal cable trays can be safely and efficiently converted to vertical runs while maintaining cable integrity and system reliability.