Reconnecting sawn cable trays requires aligning the tray ends and securing them with splice plates, bolts, clamps, or quick-connect systems to restore structural integrity and ensure safety.

Step-by-Step Guide

1. Inspect and Prepare the Tray Ends Before reconnecting, ensure the cut edges are smooth and free of burrs or sharp metal that could damage cables. Clean the surfaces to remove debris or rust, and check that the tray sections are compatible in size and type (ladder, perforated, or solid-bottom) for reconnection . 2. Align the Tray Sections Place the tray sections in their intended position, ensuring they are level and properly aligned. Misalignment can cause sagging or stress on the cables . 3. Choose a Connection Method

• Splice Plates and Bolts: Use flat metal splice plates with pre-drilled holes. Position the plates over the ends of the trays and secure them with bolts and nuts. This method provides a strong, durable connection suitable for heavy cable loads .
• Clamps: For lighter loads or temporary fixes, use cable tray clamps to hold the sections together. Ensure clamps are tightened evenly to prevent movement .
• Quick-Connect Systems: Some manufacturers offer snap, slide, or twist connectors that require minimal tools. These are faster to install but may be brand-specific . 4. Secure the Connection Tighten all bolts or clamps using appropriate tools such as spanners or torque wrenches. Ensure the connection is firm and that the trays do not move under load. Check that grounding continuity is maintained if the tray serves as a grounding conductor . 5. Test and Inspect After reconnecting, inspect the tray for stability and alignment. Lay cables carefully, ensuring they are not pinched or bent at the joint. Verify that the tray can support the intended cable load without sagging . 6. Optional Reinforcement For added strength, especially in long runs or high-load areas, consider adding additional splice plates or support brackets at the joint .

Safety Considerations

• Always de-energize nearby circuits before working on cable trays.
• Wear protective gloves and eye protection to prevent injury from sharp edges.
• Follow local electrical codes (e.g., NEC Article 392) for grounding and load requirements . By following these steps, you can safely and effectively reconnect cable trays after sawing them open, ensuring both structural stability and electrical safety.