Corner Cable Tray Support Installation

Cable tray corners should be installed using manufacturer-approved bends and accessories, ensuring proper alignment, support, and grounding to maintain system integrity and safety.

Preparation and Inspection

Before installing corner sections, inspect all trays, bends, and accessories for damage, dirt, or corrosion, and verify that they match the approved shop drawings and material submittals . Ensure the installation area is clean, accessible, and free from obstructions, and provide safe access for personnel and tools . Conduct a safety briefing and confirm that all required tools, supports, and hardware are available.

Installation Steps for Corners

1. Select the Correct Bend or Elbow: Use pre-fabricated 90° or 45° bends, tees, or radius elbows as specified by the manufacturer. Avoid field bending unless explicitly allowed, as improper bending can damage the tray or compromise cable integrity .
2. Align the Corner Section: Position the bend so that it aligns with the incoming and outgoing tray runs. Use a spirit level or laser level to ensure horizontal and vertical alignment .
3. Secure Supports: Install hangers, brackets, or supports at the recommended intervals, including near the corner, to prevent sagging or stress on the tray . Ensure that supports allow for thermal expansion and contraction.
4. Connect and Fasten: Join the corner section to the straight tray runs using manufacturer-approved bolts, nuts, and fasteners. Tighten all hardware fully to maintain structural integrity .
5. Maintain Minimum Bend Radius: Ensure that the bend radius is sufficient for the type of cables being installed to prevent damage or excessive stress on conductors .
6. Grounding and Bonding: Bond the corner section to the main earthing system using copper wire or equivalent conductors to maintain electrical continuity .
7. Inspection: After installation, visually inspect the corner for alignment, secure fastening, and proper support. Verify that the installation conforms to approved drawings and standards .

Additional Considerations

• Segregation: Maintain separation between power, data, and control cables as required. Color coding may be applied for easy identification .
• Covers: If using covered trays, ensure the cover fits securely over the corner section to protect cables from dust or mechanical damage .
• Thermal Movement: Allow for expansion and contraction of the tray system, especially in long runs or outdoor installations . By following these steps, cable tray corners can be installed safely, efficiently, and in compliance with project specifications and industry standards.