Reinforcement Methods for Cable Tray Fixing Brackets

Cable tray reinforcement and fixing brackets provide structural support, prevent sagging, and ensure safe, standards-compliant cable routing.

Types of Cable Tray Brackets and Supports

1. Wall Brackets: These are used to mount cable trays securely to walls, providing stability and space-saving installation. They are typically made from hot-dip or sendzimir galvanized steel for corrosion resistance and high load capacity, suitable for power, data, and control cables in industrial and commercial settings . 2. Stand-Off Brackets: Designed to maintain a specific clearance from walls or surfaces, these brackets range from 50mm to 300mm and are ideal for routing trays without obstruction. They are often constructed from pre-galvanized or stainless steel for durability . 3. G Hanger Support Brackets: Used for overhead support of cable trays, trunking, or baskets, these brackets are available in various sizes (e.g., 100mm, 150mm) and provide robust support for suspended installations . 4. Trapeze Support Brackets: Pre-assembled for quick installation, trapeze brackets support wide trays with adjustable drop lengths, offering strong reinforcement for heavy cable loads . 5. Standard Fixing Brackets and Clamps: These include couplers, tees, crosses, and clamps that secure cable trays at joints, directional changes, or expansion points, ensuring structural integrity and preventing sagging .

Installation and Reinforcement Guidelines

• Support Spacing: Horizontal straight sections should be supported at intervals not exceeding the tray's straight section length, typically up to 20 feet for standard trays. Vertical runs should be supported according to building structure, also not exceeding 20 feet between supports .
• Fittings and Radii: SnapTrack fittings with radii less than 12 inches should be supported within 2 feet of each extremity. Larger radius fittings require additional center supports when installed horizontally .
• Expansion Joints: Supports should be placed 2 feet on each side of expansion connections to accommodate thermal expansion and prevent stress on the tray .
• Wall Fixing: Brackets should be securely fixed to walls using flanges or anchors suitable for the wall material, ensuring the tray remains stable under full load .

Material Considerations

• Galvanized Steel: Provides excellent corrosion resistance and strength for industrial and outdoor applications .
• Stainless Steel (A316/A4): Ideal for highly corrosive environments or cleanroom installations .
• Pre-Galvanized Steel: Suitable for general indoor installations with moderate environmental exposure .

Practical Tips

• Use center supports for long horizontal runs to prevent sagging.
• Ensure all joints and fittings are reinforced with appropriate brackets or clamps.
• Select bracket type based on tray width, load, and installation environment.
• Follow EN 61537 or NEMA VE-2 standards for spacing, load, and installation compliance . By choosing the correct type of bracket, spacing supports properly, and using durable materials, cable tray systems can be reinforced effectively, ensuring long-term stability, safety, and compliance with industry standards.