How to install a double-sided cable tray tee

A double cable tray tee is installed by aligning the tee with the main and branch trays, securing it with tray clips or bolts, and supporting it with properly spaced hangers to maintain load capacity and level alignment.

Step-by-

Step Installation1.

Preparation and Positioning

Identify the location where the tee will branch from the main tray. Ensure the area is clear of obstructions and that the tee aligns with the intended cable routing. Verify that the tee size matches the main and branch trays to maintain consistent cable support and spacing.

2.

Support and Hanger Placement

Use trapeze or swing supports for vertical hangers, ensuring the maximum support spacing does not exceed 3. 6 meters (12 feet) for standard loads. Thread hex nuts and square washers onto the vertical hangers, leaving enough clearance for the cross member and tray clips.

The cross member should be level and allow horizontal adjustment for precise alignment. 3.

Attaching the Tee

Position the tee fitting so that its ends align with the main and branch trays. Secure the tee using tray clips (e.g., CG*-1) or bolts, which can be installed either inside or outside the tray depending on space and accessibility. Ensure that the connection is snug but allows minor horizontal adjustment to accommodate cable installation.

4.

Leveling and Alignment

Check that the tee is level with the main tray. Adjust the vertical hangers and cross members as needed to maintain a uniform cable path. Confirm that the tee does not interfere with tray rungs or connectors, and that the minimum bend radius for cables is maintained.

5.

Final Checks

Verify that the tee and all connected trays are securely supported and that the load does not exceed the maximum capacity per hanger (typically 318–340 kg or 700–750 lbs),. Inspect for proper spacing, alignment, and clearance to ensure safe cable installation and future maintenance access.

Additional Considerations

For double cable trays, ensure that both layers are supported adequately and that the tee allows for proper cable segregation. Use ventilated or solid-bottom tees depending on heat dissipation requirements and environmental conditions. Follow manufacturer-specific guidelines for material, finish, and corrosion protection, especially in outdoor or humid environments.

By following these steps, a double cable tray tee can be installed safely, maintaining structural integrity and compliance with electrical standards.