Cable Tray Accessories and Brackets Installation Method

Proper cable tray installation relies on the correct use of accessories and brackets to ensure stability, safety, and long-term reliability.

Key Cable Tray Accessories

Suspension Frames and BarsSmall-sized trays use lightweight frames for suspension, while larger trays require robust bars for stability and maintenance ease. Threaded rods connect ceiling structures to hoisting crossbars and can be cut to required lengths, often used with expansion nuts.

Wall and Floor Supports

Horizontal and vertical wall supports provide secure mounting points for trays, ensuring proper alignment and load distribution. Bolts and expansion anchors fix supports to walls or floors, maintaining system stability.

Connectors and Fasteners

Connectors join different tray sections, maintaining continuity and structural integrity. Washers with teeth improve electrical conductivity at grounding points, while special conductors prevent static, EMI, and electric shock.

Grounding Accessories

Grounding conductors and corrosion-resistant, flame-retardant PVC sheaths ensure safety and compliance with electrical codes.

Bracket Installation Method

Planning and LayoutReview approved shop drawings to determine tray routes, elevations, and clearances. Mark horizontal and vertical runs, ensuring no clashes with other services and sufficient space for cable pulling and maintenance.

Support Placement

Determine hanger and bracket spacing based on tray type and load, typically 1. 5 to 3 meters apart. Use laser levels or transit lines to establish consistent elevations along the tray run.

Mounting Brackets

Fix wall or floor supports using bolts or expansion anchors, ensuring secure attachment. For ceiling installations, suspend trays using threaded rods connected to crossbars, pre-threaded with nuts for efficiency. Avoid drilling structural members without consulting a structural engineer.

Tray Alignment and Connection

Align trays straight and level, connecting sections with appropriate fittings and fasteners. Use cable tray rollers for long runs to prevent kinks during cable laying.

Final Checks

Verify all supports, brackets, and connectors are secure. Ensure grounding connections are properly installed and conductive paths are continuous. Inspect for compliance with local electrical codes and safety standards.

By following these accessory guidelines and installation steps, cable trays can be installed efficiently, safely, and in a manner that allows for future maintenance and expansion.