Fiber optic cable trays should be installed by preparing the site, mounting the tray securely, and carefully routing cables while maintaining proper bend radius and protection.

Preparation and Planning

Before installation, conduct a site survey to identify hazards, cable routes, and mounting points. Review approved shop drawings to determine tray layout, lengths, and locations. Inspect all materials, including trays, ladders, and fittings, for damage or discrepancies, and store them horizontally on a flat surface with timber supports to prevent moisture or sunlight damage . Develop a cable pulling plan to coordinate equipment, access points, and responsibilities .

Mounting the Fiber Optic Cable Tray

1. Wall or Ceiling Mounting: Identify fixing points and use appropriate anchors, dowels, or screws. For wall-mounted trays, typically four screws or dowels are used at the corners of the tray . Ensure the tray is level and square.
2. Connecting Tray Components: Use couplers to join tray sections. Insert each component into the coupler until flush, then secure with thumb screws .
3. Support and Spacing: Horizontal runs must be adequately supported. Follow manufacturer recommendations for spacing between supports to prevent sagging .

Routing and Securing Fiber Cables

• Use U-shaped or centered input holes to guide fiber cables into the tray, ensuring a clockwise direction to prevent twisting .
• Secure cables with straps or plastic ties at fixture points, avoiding excessive pressure on the cable sheath .
• Maintain the minimum bend radius specified by the manufacturer to prevent fiber damage .
• Avoid sharp turns, edges, and mechanical stress. Use figure-8 loops when laying cable on surfaces to prevent twisting .

Protective Measures

• Keep cable ends covered with end caps or heavy tape to prevent contamination or moisture ingress .
• Do not leave let-off reels unattended during pulling. Use center-pull or backfeeding techniques as needed .
• Ensure LSZH or armored cables are handled carefully, especially in high-temperature environments, to avoid cracks or mechanical damage .

Final Checks

• Verify all fasteners are tight and all runs are straight and level .
• Confirm that devices, protective cases, and covers are securely locked in place .
• Document the installation, including cable routes, splice locations, and any deviations from the plan . By following these steps, fiber optic cable trays can be installed safely, efficiently, and in compliance with technical standards, ensuring long-term reliability and protection of the fiber network.