The number (such as 8, 12, or 20) indicates the span or the distance between the metal hangers that contain the tray in feet. 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. The three main types of cable tray are: Perforated Cable Trays. What is a Cable Tray System? As per the National. association representing the major electrical equipment manufac-turers in the U. The most significant section of NEMA VE 1 is safety.
