Tee at the bottom of the cable tray

To connect a tee at the bottom of a cable tray, use a TX bracket or mechanical fitting, ensure proper alignment, secure with bolts or clamps, and maintain electrical continuity.Step-by-Step Guide1. Plan the Tee Location Identify where the new tray section will branch from the existing tray. Ensure there is enough clearance for cables and that the tray can support the additional load. Mark the cut or attachment points on the existing tray for precise alignment . 2. Prepare the Existing Tray If the existing tray contains cables, you may need to carefully lift or move them to allow access. For wire mesh trays, a bolt cutter can be used to make cuts for the tee without compromising the protective coating . Rubber caps can protect cut ends to prevent cable damage. 3. Install a TX Bracket or Tee Fitting For solid or ladder-type trays, a TX bracket is commonly used to fabricate tee or cross combinations. Make the appropriate cuts in the side wall of the tray, bend down the side wall, and attach a TX bracket on each side of the tee connection . Ensure riser links or brackets are installed in pairs for stability. 4. Secure the Connection Use bolts, clamps, or quick-connect systems to fasten the tee to the existing tray. Bolted connections provide strong mechanical support and can be undone for future modifications. Quick-connect systems are faster but may be brand-specific . Ensure all fasteners are tightened according to manufacturer specifications. 5. Maintain Electrical Continuity Cable trays must remain electrically continuous. If the new tee section is mechanically independent, install a bonding jumper between the existing tray and the new branch to maintain grounding and system continuity . 6. Check Alignment and Support Ensure the tee and new tray section are level and properly supported. Use appropriate hangers or brackets to prevent sagging, typically spaced 1.5 to 3 meters apart depending on tray type and load . 7. Final Inspection Verify that all fasteners are secure, cables are properly seated, and protective covers or caps are in place. Confirm that the system complies with local electrical codes and manufacturer guidelines. By following these steps, you can safely and securely connect a tee at the bottom of a cable tray while maintaining mechanical stability and electrical safety.