Cable tray elbow with side-turning elbow

Cable tray elbows allow smooth directional changes in cable routing, available in horizontal, vertical, and side-turning configurations for various NEMA classes and radii.

Types of Cable Tray Elbows

1. Horizontal Elbows: These elbows enable the cable tray to turn horizontally, typically at 45° or 90° angles. They are used when the cable run needs to change direction along the same plane. Horizontal elbows are compatible with different NEMA classes and side rail widths, ensuring proper alignment and support for the cables . 2. Vertical Elbows: Vertical elbows allow the cable tray to change elevation, either going up or down. Standard radii include 12", 24", and 36", and they are designed to maintain cable integrity while navigating vertical transitions. They are available for NEMA Classes 12B, 12C, 20A, 20B, 20C, and higher, with corresponding side rail widths and splice plate configurations . 3. Side-Turning Elbows: Side-turning elbows are specialized fittings that combine horizontal and vertical directional changes, allowing the tray to navigate around obstacles or structural elements. These are particularly useful in complex installations where space constraints require multi-plane routing. Proper selection ensures the elbow aligns with the cable tray system and maintains mechanical support .

Key Specifications

• Radius Options: 12", 24", 36" for smooth cable bending.
• Side Rail Widths: Vary by NEMA class (1-1/8", 2", 2-3/8", 2-3/4") to match the tray system .
• Material and Finish: Options include hot-dip galvanized, bare galvanized, or powder-coated steel for durability and corrosion resistance .
• Compatibility: Ensure elbows match the NEMA class of the cable tray system to maintain structural integrity and load capacity .

Installation Considerations

• CAD Design: When designing cable tray runs in AutoCAD MEP, ensure elbows are correctly oriented. Left-turn elbows may display correctly, but right-turn elbows can appear upside down. Use the CABLETRAYADD command to place elbows from the correct side to avoid misalignment .
• Splice Plates and Fasteners: Verify that the elbow's splice plates and hole patterns match the tray sections for secure connections.
• Load and Cable Support: Select elbows with appropriate radius and class to prevent cable stress and maintain proper bend radius.

Summary

Cable tray elbows with side-turning capabilities are essential for flexible and safe cable routing. Choosing the correct type—horizontal, vertical, or side-turning—along with the proper radius, NEMA class, and material ensures smooth transitions, structural integrity, and compliance with installation standards .