Cable Tray Guys and Supports

A cable tray guy support stabilizes and secures cable trays by transferring load to structural points using rods, brackets, and ceiling or wall mounts.

Materials Needed

Cable tray (ladder, perforated, or solid-bottom type)Ceiling or wall brackets (PF type)Support rails (PS type)Intermediate brackets (PSF type)Threaded rods or unistrut for suspensionScrews, nuts, and washersMeasuring tools and levelStep-by-Step ConstructionDetermine Load and Span Calculate the total weight of the cable tray plus cables. Check the tray's rated capacity and ensure the support system can handle the maximum load. Consider additional future loads if more cables or trays may be added.

Select Support Points Identify structural points such as ceiling beams, walls, or steel girders where the guy support will attach. Supports should be spaced according to the tray manufacturer's recommendations, typically every 4–6 feet for ladder trays. Install Ceiling or Wall Brackets Mount the PF-type ceiling or wall brackets securely to the structure.

Ensure they are level and aligned with the intended cable tray path. Attach Support Rails Connect PS-type support rails to the brackets. These rails act as the main horizontal support for the cable tray.

Use appropriate fasteners to ensure a rigid connection. Add Intermediate Brackets For longer spans or heavier loads, install PSF-type intermediate brackets between the main supports. These provide additional stability and prevent sagging.

Mount the Cable Tray Place the cable tray onto the support rails and secure it using the tray's mounting hardware. Ensure the tray is level and properly aligned along its entire run. Install Guy Wires (Optional for Extra Stability) For very long or elevated runs, attach guy wires from the tray to additional anchor points.

This reduces lateral movement and distributes load more evenly. Check Alignment and Tighten Fasteners Verify that all components are level, aligned, and securely fastened. Tighten all screws, nuts, and bolts to prevent movement under load.

Tips for Safety and Compliance

Follow NE

C Article 392 and local electrical codes for spacing, grounding, and bonding. Use corrosion-resistant materials if the installation is in a humid or outdoor environment. Consider future expansion when designing support spacing and load capacity.

Ensure that the support system allows easy access for cable installation and maintenance. By following these steps, a cable tray guy support can be safely constructed to provide reliable mechanical support, prevent sagging, and maintain proper cable organization.