Cable trays simplify the wiring system design process and reduces the number of details. A spread sheet based wiring management program may be used to control the cable fills in the cable. At its heart, Cable Tray Design, Layout means choosing and setting up cable trays to hold and protect electrical and data cables. They keep cables safe and make it easy to add or change cables later. We use different types of trays for different jobs: Ladder. Most projects are roughly defined at the start of cable tray design. The Cable Tray ng standards, performance standards, test standards and application in this document have been tested extens ompetent professional en completely installed, without damage either to conductors or. 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. It is designed for. Cable tray (or cable ladder) systems are a popular alternative to electrical conduit systems, as they have an outstanding record for dependable service, design flexibility and cost savings in commercial and industrial applications.