A horizontal cable tray can be converted to a vertical tee using specialized vertical tee fittings, which allow cables to transition from horizontal to vertical runs efficiently.

Types of Vertical Tee Fittings

Vertical tee fittings are designed to provide flexibility in cable tray systems, allowing cables to ascend, descend, or branch laterally. Common variations include:

• Ascent Vertical Tee: Directs cables upward from a horizontal tray .
• Descent Vertical Tee: Directs cables downward from a horizontal tray .
• Lateral Descent Tee: Combines vertical and lateral transitions for complex routing .
• I-Beam Ladder Vertical Tee Up (VTU): Provides secure connections for NEMA-class ladder trays, suitable for heavy-duty applications .

Installation Considerations

1. Compatibility: Ensure the vertical tee matches the width, side rail flange, and class of your existing cable tray system. NEMA classes (12B, 12C, 20A, 20B, 20C, etc.) determine the appropriate fitting type .
2. Material and Finish: Fittings are available in mild steel (pre-galvanized or hot-dip galvanized) and stainless steel (316L) to match environmental and load requirements .
3. Space Constraints: In confined areas, specialized transition fittings like the Helix™ assembly allow a smooth horizontal-to-vertical transition using less space and reducing installation time .
4. Manual Placement: In some software or design tools, vertical tees may not be automatically available, requiring manual placement or custom family creation for accurate modeling .

Practical Tips

• Measure the vertical rise and ensure the tee can accommodate the cable bend radius.
• Use splice plates and secure fasteners according to the tray class to maintain structural integrity.
• Consider equal or unequal tees depending on whether the vertical branch carries the same or different cable loads .
• For multi-level installations, plan the routing to minimize sharp bends and maintain proper cable support. By selecting the correct vertical tee fitting and following installation guidelines, a horizontal cable tray can be effectively converted to a vertical branch, ensuring safe and organized cable management.