Spacing between cable tray bends

At cable tray bends, hangers or supports should be installed on each side, typically spaced no more than 1. 5 meters apart, to ensure stability and prevent cable stress.

Key Guidelines for Bend Spacing

Hanger Placement: At corners or bends, it is essential to install one hanger on each side of the bend, arranged symmetrically. This ensures the tray remains stable and the cables inside are not subjected to excessive stress or deformation during installation or operation. Maximum Hanger Spacing: The distance between hangers at bends should typically not exceed 1.

5 meters, although this may vary depending on the tray type, material, and the total cable load. Proper support prevents sagging, maintains system integrity, and distributes the weight of the cables evenly. Fixed Supports: Supports should also be placed at critical points such as the beginning and end of the tray, T-junctions, and any span longer than 30 meters.

For vertical runs, supports should be fixed to the building structure with spacing preferably less than 2 meters. Cable Securing: Cables within the tray should be secured at the start, end, and at bends, as well as every 3–5 meters along straight horizontal sections. For vertical runs, securing should occur at the top and every 1.

5 meters. This prevents cable movement, maintains order, and reduces the risk of damage. Additional Considerations: Ensure adequate clearance for maintenance, inspection, and airflow to prevent overheating.

For power and signal cables, maintain proper separation to minimize electromagnetic interference (EMI). Shielded trays may allow reduced spacing. Follow manufacturer recommendations and IEC 61537 standards for mechanical load and bend radius compliance.

By following these spacing guidelines, cable tray bends will remain structurally sound, safe, and capable of supporting the installed cables without undue stress or interference.