Cables pulled out of cable trays

Pulling cables from cable trays requires careful planning, proper tools, and adherence to safety and handling guidelines to prevent damage and ensure smooth removal.

Preparation and Safety

Before starting, inspect the cable tray and cables for any damage, sharp edges, or obstructions. Ensure the tray is properly supported, bonded, and grounded to prevent electrical hazards . Clear the area around the tray and wear appropriate personal protective equipment (PPE), including gloves and safety glasses . Label cables if necessary to avoid confusion during removal .

Tools and Accessories

• Cable pullers or fish tapes: Use these to guide cables out without pulling on insulation or jackets .
• Pulling sheaves or rollers: Place at bends or corners to reduce friction and prevent sharp bends .
• Cable lubricant: For long or tight pulls, use a non-conductive, cable-compatible lubricant to reduce friction .
• Cable clamps or straps: Secure cables to prevent sudden movement or tangling during removal .

Step-by-Step Cable Removal

1. Expose the conductor: For medium voltage cables, remove the insulation or jacket only at the pulling point to avoid damage .
2. Release cable ties or clamps: Loosen any fasteners securing the cable to the tray, but keep the cable supported to prevent sagging .
3. Hand-feed or pull carefully: Pull cables one at a time, using large sweeping bends around corners. Avoid sharp edges or tight radii that could damage insulation .
4. Use rollers at bends: At 45° or 90° bends, use rollers or sheaves to guide the cable smoothly and reduce tension .
5. Maintain tension control: Keep steady, moderate tension on the cable to prevent kinks or snags. Avoid jerking or sudden pulls .
6. Monitor for obstructions: Watch for any tray hardware, dividers, or other cables that could catch or pinch the cable during removal .
7. Secure removed cable: Once free, place the cable on a clean, protected surface to prevent damage until it is re-routed or terminated .

Additional Tips

• Plan the pull: Identify the path and any potential obstacles before starting.
• Use dividers: If the tray has multiple cable types, maintain separation to prevent interference or damage .
• Check tray supports: Ensure that the tray can handle temporary movement of cables without compromising structural integrity .
• Document the process: Label and record cable positions for future maintenance or reinstallation . By following these steps and using proper tools, cables can be safely and efficiently removed from cable trays while minimizing the risk of damage to both the cables and the tray system .