Cable tray runs

The duty class follows the cable load and the support spacing: light duty for control and small power, medium for general distribution, heavy and very heavy for main feeders and long spans. Perforated bottoms let cables be tied down and heat escape; solid bottoms give full protection where it is needed.

Every tray is backed by a published load table giving the safe working load at each span. The range covers horizontal and vertical bends, tees, crosses, reducers, covers, couplers, earth continuity straps and the full support range.