Connectors between vertical and horizontal cable trays

Helix fittings and vertical bends are commonly used to connect vertical and horizontal cable tray runs, providing smooth transitions in confined or complex spaces.

Types of Connectors

Vertical Bends (Risers): These fittings allow cable trays to change elevation, connecting horizontal runs to vertical sections. They are available in standard angles such as 30°, 45°, and 90° and are essential for routing cables between floors or different levels of equipment . Helix Fittings: Specifically designed for tight or confined areas, helix fittings from Thomas & Betts (T&B) enable smooth transitions between horizontal and vertical trays without requiring extensive space. They are available in left or right configurations, in aluminum, pre-galvanized steel, or stainless steel, and come in widths of 12-inch and 24-inch with 6-inch side rails. These fittings can be pre-assembled, saving installation time and simplifying cable management in complex layouts . Splice Plates and Joint Connectors: These are used to securely join straight sections of tray to vertical or horizontal fittings, ensuring structural integrity and proper alignment .

Installation Considerations

• Space Constraints: Helix fittings are ideal for areas near walls or in confined spaces where standard vertical bends may not fit .
• Material Selection: Choose fittings that match the tray material (aluminum, steel, or stainless steel) to maintain corrosion resistance and mechanical strength .
• Cable Protection: Ensure that bends and connectors maintain the minimum bend radius for cables to prevent damage, especially for sensitive instrumentation or fiber-optic cables .
• Support and Anchoring: Vertical and horizontal transitions should be supported with appropriate hangers, wall brackets, or trapeze supports to maintain stability and prevent sagging .

Practical Tips

• Pre-assembled helix fittings reduce on-site labor and allow for faster installation.
• Use covers or hold-down clamps where necessary to protect cables at transition points.
• Verify that the chosen connector accommodates the cable load and width of the tray system. By selecting the appropriate vertical-to-horizontal connectors and following proper installation practices, cable tray systems can maintain organized, safe, and efficient cable routing across multiple elevations.