Anti-slip brackets are installed to secure cable trays and prevent lateral movement, ensuring safe and stable cable routing under load and environmental forces.

Purpose of Anti-Slip Brackets

Anti-slip brackets are used to restrain cable trays, preventing sliding or shifting caused by the weight of cables, short-circuit forces, or external mechanical influences such as wind or vibration. They are particularly important in heavily loaded or inclined tray runs and in areas where safety and compliance with standards like BS EN 61537 or BS 6946 are required .

Installation Steps

1. Planning and Layout
   • Review approved shop drawings to determine tray routes, bends, and support points .
   • Identify locations where anti-slip brackets are required, typically at tray joints, bends, and intervals along long horizontal runs.
2. Support Preparation
   • Install primary supports such as threaded rods, wall brackets, or slotted channels according to the tray manufacturer's specifications .
   • Maintain recommended support spacing (commonly 1.2 m for standard trays, up to 3.6 m for heavy-duty center-hung trays) to prevent sagging .
3. Bracket Attachment
   • Position the anti-slip bracket under or alongside the tray at the designated points.
   • Secure the bracket using appropriate fasteners (nuts, bolts, or screws) compatible with the tray material and load requirements.
   • Ensure the bracket contacts the tray firmly to prevent lateral movement without damaging cable insulation.
4. Alignment and Leveling
   • Verify that the tray remains level and aligned along the route.
   • Adjust brackets as necessary to maintain proper tray height and slope for drainage or cable pulling.
5. Load Verification
   • Confirm that the installed brackets and tray system can withstand imposed loads, including cable weight, future additions, and environmental forces like wind or ice .
   • Check that the continuous slip load of the anti-slip bracket meets at least three times the expected working load to ensure safety .
6. Inspection and Maintenance
   • Inspect all brackets for tightness and correct positioning before cable installation.
   • Periodically check brackets during maintenance to ensure they remain secure and free from corrosion or damage.

Best Practices

• Use manufacturer-approved brackets and fasteners to maintain system integrity .
• Avoid cutting or drilling structural members without approval, as this can compromise safety .
• Ensure adequate clearance for cable pulling and future maintenance.
• Bundle and support trays properly during storage and installation to prevent deformation . By following these steps, anti-slip brackets will effectively stabilize cable trays, enhance safety, and ensure compliance with electrical installation standards.