Examine the cables within the trays for abrasions, cuts, or stress, especially at bends and supports. More frequent inspections, such as semi-annually or quarterly, are advisable in harsh environments. We'll keep it simple, no jargon, just practical advice. The process described here takes a systematic approach to ensuring that cable tray installations meet safety, reliability, and project-specific needs while following to. 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. Overloading cable trays can lead to breakdown of the tray, its connecting points and/or supports, causing hazards to persons underneath the cable tray and even leading to possible electric shock ● When cable trays are overfilled, excessive heat build-up in and around live conductors can cause the. Cable Tray Inspection – Key Technical and Structural Considerations When inspecting cable trays, several technical and structural aspects must be checked to ensure safety, efficiency, and compliance with specifications. Below is a comprehensive checklist of the most important items to verify: 🔹 1. Cable trays are a support system for electrical cables, power, signal, and communication and optical fiber cables.