Fittings (Bends and Tees): These components allow the system to change direction and branch out., 30°, 45°, 90°). A rung spacing of 6 to 9 inches (150 to 230 mm) is preferable when the cable tray cont d for instrumentation and control applications that require. This publication is intended as a practical guide for the proper and safe* installation of cable ladder systems, cable tray systems, channel support systems and associated supports. Cable ladder systems and cable tray systems shall be manufactured in accordance with BS EN 61537, channel support. Cable tray bends are designed to guide cables around obstacles, changes in direction, or elevations in an electrical system. They come in various configurations, including horizontal bends, vertical bends, and tees. The Ladder Tray features light, rugged, tubular steel construction. It is designed for. The bends, tees, crosses, risers and reducers of wire mesh cable tray can be easily and quickly made live at the project by using a bolt cutter. Since the jaws of the bolt cutter drags a layer of zinc across the cut end and forms a protective layer.