Cable tray lifting lugs should be installed at designated points, aligned with the tray's structural support, and securely fastened to ensure safe lifting and handling.

Selection and Preparation

Before installation, verify the lifting lug type and load rating to match the weight of the cable tray and its contents. Only use lugs approved by the manufacturer or specified in the project design. Inspect the tray for structural integrity, ensuring no damage or deformation exists at the intended lifting points. Clean the surface to remove debris, rust, or coatings that may interfere with secure attachment .

Installation Steps

1. Identify Lifting Points: Lifting lugs should be positioned at the ends or midpoints of the tray sections, depending on the tray length and weight distribution. Avoid placing lugs near joints or unsupported spans .
2. Align and Mark: Place the lug against the tray flange or side rail, ensuring it is perpendicular to the lifting direction. Mark the bolt or weld locations according to the lug design.
3. Attachment Method:
   • Bolted Lugs: Drill holes in the tray flange as per the lug specifications. Use high-strength bolts and washers, tightening to the recommended torque. Ensure bolts do not interfere with cable placement or tray covers .
   • Welded Lugs: If welding is permitted, tack weld the lug first, then complete the weld along the designated seams. Ensure the weld is continuous and free of cracks or porosity. Only qualified personnel should perform welding .
4. Inspection: After installation, inspect each lug for secure attachment, alignment, and absence of deformation. Verify that the lifting points can safely support the tray's weight plus any additional load from cables .

Safety Considerations

• Do not exceed the rated load of the lifting lug or the tray section.
• Use proper lifting equipment, such as slings or shackles, compatible with the lug design.
• Ensure personnel are clear of the tray during lifting operations.
• Follow manufacturer and NEC/NEMA guidelines for cable tray handling and support .

Final Notes

Cable tray lifting lugs are critical for safe handling during installation. Proper selection, alignment, secure fastening, and inspection are essential to prevent accidents and maintain structural integrity. Always coordinate with the project engineer and follow the approved method statement for the specific site conditions .