Can cable trays share the same hanger brackets

Cable trays can sometimes share the same hanger brackets, but this depends on load capacity, tray type, and manufacturer guidelines.

Key Considerations

Load Capacity: Each hanger bracket has a maximum weight it can safely support. When multiple trays are mounted on a single bracket, the combined weight of all trays and cables must not exceed the bracket's rated capacity . Overloading can lead to structural failure or sagging. Tray Type and Size: Wire mesh trays, ladder trays, and solid-bottom trays have different weights and support requirements. Brackets designed for a specific tray width (e.g., 450 mm) may only safely support one tray unless explicitly rated for multiple trays . Spacing and Support: Standard practice recommends supporting trays at regular intervals (e.g., every 5–6 feet for wire mesh trays) to prevent excessive deflection . If multiple trays share a bracket, ensure that the support spacing and bracket design can handle the combined load. Installation Guidelines: Some brackets, like trapeze or cross-brackets, are designed to suspend multiple trays in parallel, but proper alignment and secure fastening are critical . Using clamp connectors or multi-tier supports can help maintain stability when trays are stacked or run side by side . Manufacturer Recommendations: Always consult the bracket and tray manufacturer's specifications. Some systems explicitly allow multi-tray support, while others require separate brackets for each tray to maintain safety and compliance with electrical codes .

Practical Tips

• Verify the combined weight of all trays and cables before sharing a bracket.
• Use multi-tier or trapeze brackets designed for multiple trays if available.
• Maintain proper spacing between supports to prevent sagging.
• Ensure secure attachment to the ceiling, wall, or strut system.
• Follow local electrical and building codes for cable tray installation. In summary, sharing hanger brackets is possible if the brackets are rated for the combined load, the trays are compatible, and installation follows manufacturer and code guidelines. When in doubt, using separate brackets for each tray is the safest approach.