Mesh cable trays for power cables

Yes, power cables can be placed in mesh cable trays, provided the trays are properly rated, installed, and not overloaded.

Suitability and Benefits

Wire mesh cable trays, also known as wire basket trays, are increasingly used in power plants, industrial facilities, and commercial installations for power cable management due to their open-grid design, which allows excellent ventilation and heat dissipation. This is particularly important for high-voltage or heavily loaded power cables, as proper airflow reduces resistive heating and prolongs cable life . Mesh trays are also lightweight, strong, and flexible, allowing easy installation, on-site customization, and future expansion without major structural changes .

Load Capacity and Limitations

While mesh trays can support power cables, their mechanical load capacity is lower than ladder or solid trays. They are ideal for low- to medium-voltage power cables and environments where cable weight and heat generation are within the tray's design limits . Installers must consider tray width, support span, cable diameter, and total fill percentage to maintain structural integrity, proper airflow, and NEC compliance . Overloading a mesh tray with very heavy or high-voltage cables can compromise safety and performance.

Safety and Compliance

Mesh cable trays can meet NEC requirements when properly installed, grounded, and bonded. Power and control cables can share the same tray if segregated using dividers or spacing to prevent electromagnetic interference (EMI) from high-voltage lines affecting sensitive signals . Powder-coated or corrosion-resistant finishes enhance durability in industrial environments, protecting cables from dust, chemicals, and vibration .

Best Practices

• Maintain 50% fill capacity to ensure airflow and allow future expansion .
• Use dividers to separate power and control/data cables.
• Ensure proper grounding and bonding for electrical safety.
• Avoid using mesh trays for extremely heavy or high-temperature power cables; consider ladder or solid trays in such cases .
• Regularly inspect trays for corrosion, deformation, or overloading, especially in industrial or outdoor environments. In summary, mesh cable trays are a viable option for power cables when used within their load and environmental limits, offering flexibility, ventilation, and ease of installation, but careful planning is required to ensure safety and compliance.