Methods for Horizontal Bending of Cable Trays

Horizontal bends in cable trays are achieved by cutting, shaping, and reinforcing the tray to change its direction along a horizontal plane, typically using bolt cutters or specialized bending tools.

Overview of Horizontal Bends

A horizontal bend changes the direction of a cable tray along a flat, horizontal plane, allowing the tray to navigate corners, walls, or other obstacles at the same elevation. These bends are essential for optimizing space, minimizing cable stress, and streamlining installation in complex layouts.

Typical Angles and Applications

Angles: Horizontal bends commonly range from 30° to 90°, depending on the installation requirements. Use Cases: Ideal for routing cables around walls, machinery, or structural elements without changing elevation. They are widely used in industrial, commercial, and data center installations.

Methods for Creating Horizontal BendsCut-and-Bend TechniqueThe wire mesh or ladder tray is cut at precise points to allow smooth bending. Reinforcements, such as additional cross wires or brackets, are often added at the bend points to maintain structural integrity, especially for sharper angles. This method is suitable for on-site adjustments where pre-fabricated bends are not available.

Bolt Cutter Method

For wire mesh trays, a bolt cutter can be used to make live bends directly at the project site. The cutter's jaws drag a layer of zinc across the cut end, forming a protective layer that prevents corrosion. Rubber caps or edge protectors can be applied to cut ends to ensure safety and maintain cable protection.

This method allows installers to create bends, tees, crosses, and reducers without specialized machinery.

Pre-

Fabricated Horizontal Elbows

Some manufacturers provide pre-bent horizontal elbows that can be bolted into the tray system. These reduce on-site labor and ensure consistent bend angles, particularly for repetitive installations or tight tolerances.

Best Practices

Maintain Smooth Transitions: Avoid sharp bends that can stress cables; gradual bends reduce the risk of damage. Reinforce Bend Points: Especially for sharp angles, reinforcement ensures the tray maintains load-bearing capacity. Follow Standards: Ensure compliance with relevant standards such as BS EN 61537 or NEC® 392 for safe and reliable installation.

Use Proper Tools: Bolt cutters, bending jigs, or pre-fabricated elbows improve efficiency and safety. By combining these methods, installers can achieve precise, safe, and durable horizontal bends in cable tray systems, ensuring optimal cable management and structural integrity.