Erection of cable tray support against the wall in vertical shaft

Cable trays in vertical shafts should be supported using wall-mounted brackets or vertical rail systems, ensuring proper load distribution, cable security, and compliance with IEC 61537 and other relevant standards.Support MethodsFor vertical installations, cantilever wall brackets or vertical rail systems are commonly used. Cantilever brackets are mounted directly to the wall and support the tray along its vertical run, while vertical rail systems allow cables to hang securely, reducing reliance on cable ties alone . These supports must be designed to handle the weight of the cables, including any additional mechanical loads, and maintain proper spacing to prevent sagging or deformation .Structural ConsiderationsTray Orientation: Standard horizontal trays turned on their side are not structurally equivalent; the side rails may not support the same weight, requiring closer support spacing .Cable Security: Every cable should be secured to prevent sliding or piling, but over-tightening ties can damage insulation . Vertical rail systems mitigate this risk by supporting cables independently of ties.Load Calculations: Consider the total weight of cables, potential short-circuit forces, and environmental factors such as vibration or temperature changes .Compliance and StandardsIEC 61537 provides guidelines for metallic cable tray systems, including construction, testing, and performance requirements .DIN EN 61537 and BS EN 61537 outline support distances, material selection, and corrosion protection for industrial environments .Ensure that the installation does not exceed the maximum fill area and maintains proper ampacity, as vertical stacking can increase heat accumulation and require derating .Practical RecommendationsUse wall-mounted brackets or vertical rail systems specifically designed for vertical cable runs.Avoid simply turning horizontal trays on their side, as this compromises structural integrity and heat dissipation .Maintain adequate spacing between supports according to manufacturer specifications and standards.Secure cables without over-tightening, and consider future additions or modifications.Evaluate environmental and mechanical loads, including potential water, oil, or corrosive exposure . By following these guidelines, vertical cable tray installations can be safe, durable, and compliant, while minimizing risks of cable damage, overheating, or structural failure.