Common cable tray fittings include cable tray elbows, tees, crosses, bends, risers, reducers, bolts and nuts, locks, expansion screws, supporting brackets, suspension rods, cross arms, bases, connecting plates, covers, fixings, cable cleats, and system. Common cable tray fittings include cable tray elbows, tees, crosses, bends, risers, reducers, bolts and nuts, locks, expansion screws, supporting brackets, suspension rods, cross arms, bases, connecting plates, covers, fixings, cable cleats, and system. OBO BETTERMANN has offered prod-ucts and solutions for electrical instal-lation for over 100 years. Our focus has always been on solutions from the field of cable support systems. Establishing partnerships. en completely installed, without damage either to conductors or structural system use maintain spacing or to keep cables in place when the tray is ect the minimum bend ra-dius for cables as they exit the bottom of the cable tray. A rung spacing of 6 to 9 inches (150 to 230 mm) is preferable when. Our cable tray design considerations guide details key factors to consider when designing cable tray systems for industrial and commercial applications. The Ladder Tray features light, rugged, tubular steel construction. It is designed for. For ease of installation and accessibility, lay cable and hose in trays instead of pulling it through conduit or raceway. These tray systems allow excellent ventilation and prevent sagging while routing.