How to fasten cable tray covers securely

Cable tray covers can be securely fastened using clips, clamps, or bolts depending on the tray type and installation conditions.

Using Clips

For quick and reusable fastening, snap-on clips are commonly used. These clips are pressed into place without welding, with the main body inside the tray and a smaller part gripping the cover. They are typically made from 304 stainless steel, offering corrosion resistance for indoor and some outdoor applications. Clips are ideal for areas where covers may need to be removed for maintenance, but they are less suitable for high-vibration environments .

Using Mechanical Clamps

For more demanding conditions, such as exposure to wind or vertical installations, mechanical cover clamps provide a stronger hold. Examples include:

• PKP-SP1: Screwed onto perforated trays for a secure connection.
• PKP-SP2: Tool-free clamp for perforated trays, quick to install.
• PKP-SPM1: Screwed onto mesh trays for permanent fastening . These clamps ensure the cover remains in place under stress and are suitable for both indoor and outdoor installations.

Using Bolts or Hold-Down Clips

For standard metal trays, covers can be fastened using hold-down clips or bolts. The process involves:

1. Aligning the cover over the tray.
2. Using clips or bolts to secure the cover to the tray edges or support brackets.
3. Ensuring the fasteners are tight enough to prevent movement but allow removal if needed .

Material Considerations

Covers and fasteners are typically made from aluminum, mill-galvanized steel, or stainless steel (304 or 316). Stainless steel is preferred for corrosion resistance, especially in outdoor or humid environments .

Best Practices

• Ensure the tray and cover are clean and free of debris before fastening.
• Use the appropriate fastener type for the tray (ladder, perforated, or mesh).
• Maintain proper spacing and alignment to prevent gaps or stress points.
• For high-vibration or outdoor installations, prefer mechanical clamps or bolted connections over snap-on clips . By selecting the right fastening method and materials, cable tray covers can be securely installed, protecting cables from environmental damage and ensuring safety and accessibility for maintenance.