Fixing of cable trays and angle steel brackets

Cable trays can be securely fixed using rod supports or angle steel supports, with installation methods tailored to load, environment, and structural requirements.

Cable Tray Support Options

Rod Supports: Rod supports consist of threaded rods, base plates, and supporting components. They are highly adjustable, allowing precise height and angle positioning of cable trays. Installation is straightforward, often requiring only rotation and tightening of fasteners without welding.

Rod supports are ideal for installations where flexibility and future adjustments are important, such as in retrofit projects or areas with varying ceiling heights. Angle Steel Supports: Angle steel supports are made from structural steel angles, fasteners, and connectors, typically welded or bolted into place. They provide robust structural integrity, making them suitable for heavy loads, industrial environments, or areas subject to vibration and mechanical stress.

Once installed, angle steel supports offer long-term stability and can be customized to meet specific load-bearing requirements.

Installation Techniques

Span Placement: Supports should be positioned according to the cable tray manufacturer's recommendations. Common methods include: 1/4 Span: Supports placed a quarter of the distance from splice plates on continuous runs.

Mid-

Span: Supports placed at half the distance from splice plates. Direct Under Splice Plate: Supports installed directly beneath splice locations for maximum stability. Attachment Methods: Bolting: Angle steel supports can be bolted to structural elements such as beams or walls, providing secure connections.

Welding: For permanent installations, welding angle steel to structural steel ensures maximum rigidity. Suspension Rods: Rod supports can be suspended from ceilings or beams using threaded rods and anchor points, allowing height adjustments. Material Considerations: Cable trays and supports are typically made from steel, stainless steel, or aluminum.

Galvanized or hot-dip galvanized steel is recommended for corrosion resistance in industrial or outdoor environments. Stainless steel is preferred in highly corrosive or chemical environments.

Best Practices

Ensure supports are installed by competent personnel familiar with electrical installation standards (BS EN 61537, BS 6946, or NEMA VE-2) to maintain safety and compliance. Avoid using cable trays as walkways or ladders to prevent damage and personal injury. Use system components designed to work together, including fittings, brackets, and mounting plates, to ensure structural integrity and ease of maintenance.

Consider environmental factors such as vibration, wind, or chemical exposure when selecting support type and material. By following these methods, cable trays and angle steel supports can be securely fixed, ensuring long-term stability, safety, and compliance with industry standards.