Construction of the inside corner of the cable tray

Inside corners of cable trays can be constructed using adjustable corner pieces or by carefully cutting and bending the tray to maintain proper bend radius and cable support.Using Adjustable Corner PiecesFor standard cable trays, adjustable corner pieces are commonly used. These pieces are inserted inside the tray at the corner and secured with screws, allowing angles typically from 0° to 75° to accommodate various layouts . This method ensures a smooth transition for cables, reduces stress on the cables, and maintains structural integrity.Cutting and Bending Wire Mesh TraysFor wire mesh cable trays, which are flexible and installer-friendly, corners can be formed by strategic side cuts and bending on-site . Key steps include:Measure and mark the corner section accurately.Make side cuts to allow the tray to bend without deforming the mesh.Maintain the proper bend radius to prevent damage to Ethernet, fiber, or power cables.Ensure grounding and bonding are verified after modification.Avoid overfilling the tray at the corner to maintain airflow and cable safety.General Installation Best PracticesAlways follow approved shop drawings to determine tray route, dimensions, and support layers .Check for clashes with other services (HVAC, pipes, ducts) before installation.Use appropriate tools such as saws, drills, wrenches, and levels for cutting, drilling, and securing fittings .Ensure the corner installation complies with relevant standards like NEC Article 392 or BS EN 61537 for safety and performance .Secure the tray to supports and verify that the corner does not compromise the tray's load-bearing capacity.Safety and MaintenanceOnly trained personnel should perform installation.Avoid using the tray as a walkway or support for personnel.Inspect corners periodically to ensure screws and bends remain secure and cables are not stressed. By combining adjustable corner pieces or careful on-site bending with proper planning and adherence to standards, inside corners can be constructed safely and efficiently, ensuring smooth cable routing and long-term system reliability.