Cable tray bends are designed to guide cables around obstacles, changes in direction, or elevations in an electrical system. Why Bending is Essential in Wire Mesh Cable Tray Systems In most installations, wire mesh cable trays need to be adapted to fit specific architectural spaces. When a wire cable tray is cut, the fact that a. Students trading aid on how best to put an internal 90 degrees bend in steel cable tray. The Ladder Tray features light, rugged, tubular steel construction.