Cable tray installed at 90 degrees

Cable trays can be connected at 90 degrees using either prefabricated elbow fittings or by fabricating a bend from a straight tray section, ensuring secure, stable, and safe cable routing. Methods for 90-Degree Connections1.

Prefabricated Elbow Fittings

Prefabricated elbows, available in horizontal or vertical configurations, are designed to fit inside or over the tray ends and are secured with screws, bolts, or included fasteners. These fittings allow for precise angles ranging from 0° to 90° and are ideal for quick installation, reducing the need for cutting or bending the tray. They maintain system stability, support cable weight, and simplify future maintenance.

2.

Fabricated or Mitered Bends

This method involves creating a 90-degree bend from a straight tray by cutting and bending the tray itself. Steps include: Mark the center line where the bend will occur. Cut 45-degree angles on the tray flanges on both sides of the center line.

V-notch the base to allow the sides to close together. Flatten the tray lips at the bend point using a blunt object or hand tool. Bend the tray to 90° and secure the joint with bolts.

Add a gusset if needed for reinforcement, cutting a piece of tray to fit and bolting it to the bend. This method is flexible for custom angles but requires careful measurement, cutting, and safety precautions.

Tools and Materials Needed

Straight cable tray sectionCutting tools (angle grinder, hacksaw, or hand grinder)Measuring tape, marker, set square, or protractorDrill and drill bitsNuts, bolts, washersCold galvanizing spray for rust protectionProtective equipment (gloves, goggles)Best PracticesEnsure secure fastening to prevent sagging or loose joints, which can damage cables or create safety hazards. Maintain system stability by reinforcing bends with gussets or prefabricated elbows. Use rust protection on cut edges to prolong tray life.

Plan for easy maintenance, leaving enough clearance for cable installation and future adjustments. Verify that the bend does not exceed the tray's load capacity or compromise grounding continuity. By choosing the appropriate method and following proper fabrication or installation steps, a 90-degree cable tray connection can be both safe and durable, supporting cables effectively while maintaining a professional appearance.