Installation Method of Cable Tray Inclined Support

Installing cable tray inclined support brackets requires proper layout, secure mounting, leveling, and attachment of the tray to ensure safe and code-compliant support. Step 1: Plan and Mark the RouteDetermine the path of the cable tray, including any inclines, bends, or elevation changes. Use a chalk line or laser level to mark the tray route on walls, ceilings, or structural supports.

Identify the points where support brackets will be installed, typically at intervals of 1. 5 to 2 meters, but always check the manufacturer's specifications and NEC guidelines for maximum load and spacing. Step 2: Select and Prepare BracketsChoose the appropriate inclined support brackets (wall-mounted cantilever or trapeze-style hangers) based on the tray type and slope.

Ensure brackets are rated for the tray load and environmental conditions. For trapeze supports, prepare threaded rods, cross members, and washers to allow for leveling and horizontal adjustment. Step 3: Mount the BracketsWall-Mounted Cantilever Brackets: Drill holes at marked points, insert anchors (expansion bolts for concrete), and secure the brackets.

Ensure each bracket is level and aligned with the incline. Trapeze or Ceiling Suspension: Drill holes in the ceiling or structural beam, install anchors, and attach threaded rods. Slide on cross members with washers, then thread nuts to position the cross member at the correct height.

Ensure the cross member is level and aligned with the intended incline. Step 4: Adjust for InclineFor inclined trays, calculate the slope angle and adjust the bracket height accordingly. Use a spirit level or laser level to maintain a consistent incline along the tray run.

The cross member or cantilever arm may need fine adjustments using the top and bottom nuts on threaded rods to achieve the correct slope. Step 5: Install and Secure the TrayPlace the cable tray sections onto the mounted brackets. Use tray clips or bolts to secure the tray to the brackets, preventing movement.

Ensure that all sections are aligned and that the incline is consistent. For long runs, check that the tray is properly supported at each bracket and that the maximum load per support is not exceeded. Step 6: Final ChecksVerify that the tray is level along the incline and properly fastened.

Ensure clearance from other services (pipes, ducts) and compliance with NEC fill ratios. Deburr any cut tray edges to prevent cable damage. Confirm that all bonding and grounding requirements are met.

By following these steps, you can safely and efficiently install inclined cable tray support brackets, ensuring structural integrity, proper cable routing, and compliance with electrical codes.