Cable tray systems are structural components used to support insulated conductors and control, instrumentation, and communication cables. They are typically installed overhead, along walls, or under raised floors in electrical rooms, industrial plants, process areas, and. Cable tray types, fill rules for single-conductor and multiconductor cables, ampacity derating, separation requirements, and when to use tray vs conduit. Cable tray is the preferred wiring method for industrial facilities, data centers, and large commercial buildings where routing dozens or. maintain spacing or to keep cables in place when the tray is ect the minimum bend ra-dius for cables as they exit the bottom of the cable tray. Code Change Summary: A clarification was made regarding separation of conductors in cable trays when conductors operate at different voltage levels.
[PDF Version]