Barriers: Use solid walls inside one tray to separate power, control, and data cables. Separate Trays: Use different trays for different power levels or signal types. Rules state. 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. A rung spacing of 6 to 9 inches (150 to 230 mm) is preferable when the cable tray cont d for instrumentation and control applications that require. For a large installation, there are many distribution circuits – submains – going to DBs and MCCs from main switchboards. In this case, you might have to install many cables on perforated cable trays or ladders of, for example, two layers with 1000mm wide. HV and LV single core cables shall be laid in trefoil groups with 150 mm clear spacing between trefoils. The mechanical and electrical characteristics, tests, certifications, overall quality management, recommendations mentioned. Our Cable Tray Design Considerations Guide details key factors to consider when designing cable tray systems for industrial and commercial applications. It also demonstrates how Eaton's solutions and services can help: As an industry leader in cable tray, Eaton offers one of the widest ranges of.