Fixing clips inside the cable tray

Clips inside a cable tray secure cables safely, prevent movement, and maintain organization using appropriate clamps, ties, or rod-mounted supports.

Types of Clips and Supports

• Rod Clips and Spring Clips: These are used to attach small cable containment to threaded rods, providing support for cable trays, baskets, or trunking with arms typically around 68mm long .
• Cable Tray Clamps: Heavy-duty clamps, often made from copper alloy or zinc-plated steel, can hold cables directly on the tray surface or attach the tray to beams and channels. They are designed to handle loads up to 300–400 lbs and can include grounding options .
• Plastic Cable Ties and Mounts: Polyamide 6.6 ties can secure individual cables within the tray, preventing slippage and maintaining neat cable routing .

Installation Methods

1. Suspended Mounting with Rods: Threaded rods suspend the tray from ceilings, allowing easy access for maintenance and keeping cables off the floor . Rod clips or spring clips can attach the tray to these rods.
2. Wall-Mounted Brackets: Brackets secure trays to walls, ideal for confined spaces or wire mesh basket trays. Clips or clamps can be used to hold cables within the tray .
3. Surface-Mounted Fixing: For floor-level installations, clips or brackets attach the tray directly to the surface, commonly used in industrial areas .

Best Practices

• Spacing: Mounting brackets or clips should typically be spaced 4–5 feet apart for standard trays, with closer spacing for heavier loads or longer spans .
• System Compatibility: Use clips and clamps designed for the specific tray system to ensure safety and compliance with standards such as BS EN 61537 .
• Cable Restraint: Clips should restrain cables to withstand forces generated during normal operation and short circuits, preventing movement that could damage cables .
• Material Considerations: Choose corrosion-resistant materials (e.g., tin-plated or stainless steel) for outdoor or harsh environments .

Additional Tips

• Use tray hangers for additional support on heavy cable loads.
• Cable tie mounts can organize cables and prevent them from slipping out of the tray.
• Ensure all fixings are installed by competent personnel familiar with electrical installation safety standards . By selecting the appropriate clips, clamps, and installation method, you can maintain a secure, organized, and compliant cable tray system.