For a 600mm (approximately 24-inch) wide cable tray, the typical support spacing ranges from 1.5 meters to 3 meters, depending on tray type, load, and cable weight.

Recommended Support Spacing

• Ladder Cable Trays: For a 600mm wide ladder tray, supports are generally recommended every 1.5 to 3 meters along horizontal runs to prevent sagging and maintain structural integrity, especially under heavy cable loads . Wider trays may require closer spacing if carrying large power cables or dense cable bundles .
• Perforated or Wire Mesh Trays: These trays, often used for lighter cables, can follow similar spacing guidelines, but the maximum span should not exceed 1.5 to 2 meters for heavy loads to ensure stability and prevent deformation .
• Vertical or Multi-Level Installations: When stacking trays vertically, maintain a minimum vertical clearance of 150mm between trays to allow for airflow, heat dissipation, and future cable additions .

Factors Affecting Spacing

1. Cable Load and Type: Heavier power cables require closer support spacing, while small-diameter control or instrumentation cables can tolerate wider spans .
2. Tray Material and Design: Steel ladder trays can span longer distances than wire mesh or perforated trays due to higher rigidity .
3. Environmental Conditions: High-temperature or corrosive environments may necessitate closer support spacing to prevent tray deformation or failure .
4. Manufacturer Specifications: Always consult the cable tray manufacturer's load charts, as some wide trays may require reduced spans to safely support the intended cable load .

Practical Tips

• Use hanging rods or brackets with a minimum diameter of 8mm for stability .
• Ensure supports are level and evenly spaced to prevent uneven stress on the tray and cables .
• For installations with shielded power and signal trays, horizontal separation can be reduced, but support spacing should still follow load requirements . By following these guidelines, a 600mm wide cable tray can be safely mounted, ensuring proper cable support, heat dissipation, and long-term system reliability.