Cable tray model codes and accessories

Cable tray systems are categorized by type, material, and size, with standardized model codes for straight sections, fittings, and accessories to ensure proper selection and installation.

Cable Tray Types and Model Codes

Cable trays are generally classified into several types, each with specific model codes:

• Ladder Tray: Features side rails with rungs for cable support, ideal for heavy-duty or high-voltage applications. Codes often include width, rung spacing, and material type (e.g., steel, aluminum) .
• Solid Bottom Tray: Provides full support for cables, suitable for sensitive or small cables. Model codes specify width, depth, and finish .
• Ventilated Tray: Has perforated bottoms for airflow and heat dissipation. Codes indicate perforation type, width, and material .
• Wire Mesh Tray: Lightweight, flexible, and easy to install, often coded by width, height, and finish .

Accessories and Fittings

Cable tray systems include a wide range of accessories to facilitate routing, support, and safety:

• Elbows and Bends: Horizontal and vertical bends for directional changes, coded by angle (e.g., 45°, 90°) and tray type .
• Tees and Crosses: For branching or intersecting tray runs, with codes specifying tray width and material .
• Reducers: Transition between different tray widths, coded by inlet and outlet dimensions .
• Covers and Lids: Protect cables from dust or mechanical damage, coded by tray type and width .
• Supports and Hangers: Wall brackets, ceiling hangers, and trapeze supports, coded by load capacity and mounting type .
• Splice Plates and Connectors: Ensure structural continuity between tray sections, coded by tray type and material .

Material and Finish Codes

Cable trays are manufactured in various materials, each with specific codes:

• Steel: Pre-galvanized, hot-dip galvanized, or stainless steel, coded by thickness and finish .
• Aluminum: Lightweight and corrosion-resistant, coded by alloy and finish .
• Fiberglass or PVC: Non-metallic options for corrosive environments, coded by size and chemical resistance .

Standards and Compliance

Model codes and accessories are designed to comply with international standards:

• NEMA VE 1-2017 for metal cable tray systems .
• UL, CE, IMQ, LCIE certifications for safety and quality .
• ASTM A123 & ISO 1461 for material coatings and corrosion resistance .

CAD/BIM Resources

Manufacturers provide CAD and BIM files for design integration:

• ABB and Eaton offer downloadable CAD/BIM models for straight sections, fittings, and accessories .
• Files are available in multiple formats compatible with Revit, AutoCAD, and PDMS, facilitating accurate project planning .

Summary

When selecting cable trays and accessories, it is essential to consider tray type, material, size, and compliance with standards. Model codes typically encode these parameters, while accessories like elbows, tees, reducers, and covers ensure flexible and safe cable routing. Utilizing CAD/BIM resources streamlines design and installation, ensuring compatibility and efficiency in industrial and commercial projects .