What are the best practices for routing high-temperature cables in metal cable trays?

Because these cables operate in extreme heat, their installation in cable trays, trunking, or strut channels requires strict thermal management:

Heat Dissipation: High-temp cables rely on ambient air to cool. Wire mesh cable trays or perforated metal cable ladders are vastly superior to solid-bottom trunking because they maximize airflow.

Spacing Rules: Cables should be installed in a single, flat layer with adequate spacing (often 1x to 2x the cable diameter) between them. Bunching them together creates a “heat trap” that can push the internal temperature beyond the cable’s maximum rating.