Cable tray fixing and binding straps

Cable tray fixing and binding straps are essential for securely supporting, organizing, and earthing cables in commercial and industrial installations.

Cable Tray Fixing

Cable tray fixing involves securing the tray to structural supports such as walls, ceilings, or struts. Common fixing methods include:

• Cable tray hangers and brackets: These support horizontal runs of trays from overhead structures, ensuring stability and proper alignment .
• Strut-mounted clips: For wire basket trays, clips like the KBT Wire Basket Tray Clip allow quick attachment to strut channels without additional tools, using two or more clips per support depending on tray width .
• Support brackets: Used at intervals along the tray to prevent sagging and maintain load distribution . Tray fixing ensures that cables remain organized, reduces the risk of entanglement, and complies with safety standards.

Binding Straps

Binding straps are used to secure cables within the tray, preventing movement and maintaining neat cable runs. Types include:

• Plastic loop clamps and cable ties: Common for light to medium-duty applications, available in various lengths and strengths .
• Vibration-damping loop clamps: Reduce stress on cables in environments with mechanical vibration .
• Metal straps: Used for heavy-duty or high-temperature applications, providing durable and secure binding . Proper binding prevents cable damage, maintains airflow in ventilated trays, and supports compliance with electrical codes.

Earthing and Bonding Straps

Earthing straps are critical for safety, providing electrical continuity between tray sections:

• Copper braid earthing straps: Electro-tinned for corrosion resistance, these straps connect tray sections and ensure proper grounding .
• Installation: Typically fixed with M6 bolts or similar fasteners, compatible with light, medium, and heavy-duty trays . Earthing straps protect personnel and equipment by preventing potential electrical hazards.

Summary

For a complete cable tray installation:

1. Fix the tray using hangers, brackets, or strut clips to secure it to the structure.
2. Bind cables with appropriate straps or clamps to maintain organization and prevent movement.
3. Install earthing straps to ensure electrical safety and compliance. Selecting the correct type of fixing and binding strap depends on tray type (solid, ventilated, or ladder), cable load, and environmental conditions . Proper installation enhances safety, durability, and efficiency in cable management systems.