Should the low-voltage wiring in the factory be run through cable trays

Yes, low-voltage wiring can be run through cable trays in a factory, provided proper separation, support, and safety measures are followed.

Benefits of Using Cable Trays

Cable trays offer a practical solution for low-voltage wiring in industrial environments. They allow for organized routing, easier maintenance, and future upgrades or reconfigurations. Cables can be clearly marked, tied down, and segregated to maintain spacing and prevent interference, which is especially important in complex factory layouts with multiple systems running in parallel .

Compliance and Safety Considerations

When installing low-voltage wiring in cable trays, it is essential to follow NEC and TIA standards:

• Maintain separation from high-voltage power lines to prevent electromagnetic interference (EMI) and signal disruption. Use separate trays, dividers, or metallic barriers if minimum spacing cannot be maintained .
• Ensure cables are listed or labeled by a Nationally Recognized Testing Laboratory (NRTL) for the environment in which they are installed .
• Properly support and secure cables within the tray using cable ties or fixed barriers to maintain spacing and prevent sagging or damage .
• Follow ampacity derating, bend radius, and fire safety requirements to avoid overheating and ensure long-term reliability .

Installation Best Practices

• Use ladder-type or ventilated trays to allow airflow and reduce heat buildup.
• Plan the layout to avoid congestion and allow easy access for installation and maintenance.
• Tie down cables in horizontal runs and consider spacing requirements for vertical installations, especially for multiconductor or power-limited cables .
• Anticipate future expansion by leaving room for additional cables and using modular tray systems.

Summary

Running low-voltage wiring through cable trays in a factory is both practical and code-compliant when proper separation, support, and safety measures are implemented. Cable trays improve organization, facilitate maintenance, and allow for future scalability, making them a preferred choice for industrial low-voltage installations .