Cable Tray Bend Project

Cable trays can be bent safely and effectively using proper tools, techniques, and adherence to manufacturer and safety standards.Types of Cable Trays and Bending MethodsCable trays come in various types, including ladder, wire mesh (basket), and solid-bottom trays. Each type has specific bending methods:Ladder trays: Can be bent using specialized cable tray benders or fabricated in the workshop for precise angles . Field bends are possible but often involve cutting and bolting straight sections together .Wire mesh trays: Bends, tees, crosses, risers, and reducers can be made on-site using a bolt cutter, which forms a protective zinc layer on cut ends, maintaining corrosion resistance .Metallic trays: Require careful preparation, cleaning, and inspection before bending to avoid damage or cracks .Preparation StepsInspect the tray for dents, cracks, or defects that could compromise integrity .Clean the tray to remove dirt, debris, or moisture for accurate bending.Measure and mark the desired bend location and angle.Select the appropriate tool, such as a manual or hydraulic cable tray bender suitable for the tray's material and size .Field Bending vs Pre-Fabricated BendsField bending: Straight sections are cut and bolted together to form the desired angle. This method is flexible but may result in sharp angles without a smooth curve .Pre-fabricated bends: Available in various radii (e.g., 12”, 24”, 36”, 48” for a 6” tray) and provide smooth curves, reducing stress on cables .Safety and StandardsFollow BS EN 61537 for cable tray manufacturing and BS 6946 for channel support systems .Cable trays are supports for cables, not walkways or ladders, to prevent personal injury and system damage .Ensure bends do not exceed the manufacturer's recommended minimum radius to avoid cable damage .Best PracticesUse rubber caps or protective covers on cut ends to prevent injury and maintain protection .Plan bends to minimize sharp angles and maintain smooth cable routing.Always have a competent installer familiar with electrical installation practices perform the work .Consider using SnakeTray or similar systems for complex or numerous bends . By following these guidelines, your cable tray bending project can achieve safe, durable, and professional installations while maintaining cable integrity and compliance with standards.