Ladder-type and large span cable trays are ideal for supporting heavy cables over long distances.

Ladder-Type Cable Trays

Ladder cable trays are specifically designed to carry significant cable loads over long spans, typically ranging from 10 to 24 feet between supports. Their rung-and-rail structure provides excellent mechanical strength while allowing airflow around the cables, which helps with heat dissipation. Ladder trays are most appropriate for heavy power cables and long runs where ventilation is essential, making them a preferred choice in industrial and commercial installations .

Large Span Cable Trays

Large span cable trays are engineered for even longer spans and higher loading capacities. They are often constructed from pultruded FRP (fiberglass reinforced plastic), stainless steel, or aluminum alloys and can be finished with galvanized or powder-coated surfaces for corrosion resistance. These trays can be ladder-style, channel-style, or perforated, and are suitable for heavy, sensitive, or corrosive environment cables, including communication, thermocouple, and underground cables .

Key Features of Large Span Trays

• High load capacity to support heavy cables over extended distances.
• Corrosion and heat resistance, suitable for harsh weather conditions.
• Versatile installation with accessories like corbels, hangers, and fixations.
• Long service life and easy maintenance.
• Support intervals can exceed 20 feet, reducing the number of supports required for long runs .

Summary

For installations requiring long spans and heavy cable support, ladder-type trays are commonly used for standard long runs, while large span cable trays are ideal for extreme spans, heavy loads, or harsh environmental conditions. Both types provide structural integrity, efficient heat dissipation, and flexibility in industrial and commercial applications .