Fiber Optic Cable Tray Fixing

Fiber optic cable trays are fixed using screws, dowels, and clamps, ensuring secure wall mounting while minimizing mechanical stress on the cables.

Wall Mounting and Fixing

To install a fiber optic cable tray on a wall, first locate the fixing holes on the tray, typically at the four corners . Use dowels and screws appropriate for the wall material to secure the tray firmly . For some trays, the base is hung on pre-installed bolts and then fixed with screws to prevent movement . Ensure the tray is level and square before fully tightening the fasteners .

Cable Securing within the Tray

Fiber optic cables should be placed in the tray using designated input holes, often U-shaped or centered, depending on the tray model . Use straps or plastic ties to secure the cable without applying excessive pressure on the outer jacket . Avoid sharp bends, twisting, or pulling over edges to prevent damage . For vertical installations, clamp the cable at frequent intervals to support its weight and prevent long-term stress .

Best Practices

• Maintain smooth curves and avoid sharp turns or kinks in the cable .
• Use figure-8 loops when laying excess cable to prevent twisting .
• Keep protective material on the cable until installation is complete, especially for outdoor or sensitive LSZH sheathed cables .
• Ensure the installation area is free from sharp objects or debris that could damage the cable .
• Verify that all fasteners are tight and that the tray is adequately supported along horizontal and vertical runs .

Tray Types and Compliance

Fiber optic cables can be installed in various tray types, including ladders, troughs, channels, and solid-bottom trays . While optical fiber cables do not require a specific tray rating, they must comply with the National Electric Code (NEC) for safe installation in tray environments . By following these methods, fiber optic cable trays can be securely fixed while protecting the integrity of the cables and ensuring long-term reliability of the installation.