Aluminum alloy cable trays come in various specifications

Aluminum alloy cable trays are lightweight, corrosion-resistant systems available in ladder, ventilated, and solid-bottom designs, typically made from 6063 and 5052 aluminum alloys, with high load capacity and compliance with NEMA, CSA, and UL standards.

Material and Construction

Aluminum cable trays are primarily constructed from Aluminum Association Alloy 6063 for straight sections and fittings, while all fabricated parts such as rungs and side rails may use Alloy 5052 for enhanced durability and corrosion resistance. Ladder trays consist of two longitudinal side rails with transverse rungs welded at standard spacings of 6, 9, or 12 inches, while radiused fittings follow a 9-inch industry standard spacing. All edges and welds are rounded and smooth to prevent cable damage.

Tray Types and Models

Ladder Cable Trays – Designed for heavy cable loads and dense cable transitions, offering high thermal conductivity to prevent overheating. Ventilated or Perforated Trays – Feature openings in the bottom to allow airflow and reduce heat accumulation, supporting CSA class C/3M or NEMA 8C loads.

Solid-

Bottom Trays – Provide full support for sensitive cables and are suitable for environments requiring extra protection. Specialty Models – Examples include the 653 Series Snake Tray, an ultralight, high-capacity system for extra-large cable runs.

Load Ratings and Safety

Aluminum trays are engineered to support an additional 200 lb concentrated load on any portion of the tray beyond the published load class, with a 1. 5 safety factor. Deflection is calculated based on simple spans, with continuous spans reducing deflection by up to 50%.

Rungs are designed to handle heavy loads while maintaining structural integrity.

Dimensions and Lengths

Standard tray widths range from 6 to 36 inches, with lengths of 10, 12, 20, or 24 feet depending on the manufacturer. Side rails are often fabricated as I-beams to enhance strength while keeping the tray lightweight. Fittings have minimum radii of 12 to 48 inches to accommodate cable bends.

Installation Features

Aluminum trays are lightweight, making them easier to install than steel alternatives. They include fast snap-in splice plates or Wedge-Lock splice plates with bolts and nuts for secure connections. The trays are suitable for both indoor and outdoor applications, with excellent corrosion resistance and durability against environmental forces.

Compliance and Standards

Aluminum cable trays meet NEMA VE 2, CSA, and UL certifications, ensuring safety, reliability, and compatibility with electrical codes. Load calculations, deflection factors, and material selection are based on these standards to ensure optimal performance in various environments. In summary, aluminum alloy cable trays offer a lightweight, durable, and versatile solution for cable management, with multiple models and specifications tailored to load requirements, environmental conditions, and installation preferences.

They are widely used in industrial, commercial, and outdoor applications due to their high strength, corrosion resistance, and ease of installation.