Drop-Outs: Allow cables to exit the tray vertically to connect to equipment below. Cable Tray Supports: These include trapeze hangers, center-span supports, and wall brackets that anchor the entire system to the building structure (ceiling, wall, or floor). Hubbell's NEXTFRAME® Ladder Tray is the effective and widely used cable runway that supports and delivers bundles of cable between cabinets, racks, and closets, along walls, and suspended from ceilings. The Ladder Tray features light, rugged, tubular steel construction. We recognize the need for a complete cable tray reference source for electrical engineers and designers. The following pages address the 2014 National Electrical Code® requirements for cable tray systems as well as design. • Cables may exit or enter through the top or the bottom of the tray. • Moisture cannot accumulate in ladder cable trays and be piped into electrical equipment. Study with Quizlet and memorize flashcards containing terms like The most desirable method of exiting cable from a cable tray is, Which of the following provides a curved surface for the cable to follow as it passes from the tray, A cable hanger elbow is used to and more. Cable trays simplify the wiring system design process and reduces the number of details.