Reverse connection method for cable tray tee

A reverse connection for a cable tray tee involves modifying the tray sidewalls, using TX brackets or splice plates, and securing the tee in place with bolts and riser links to create a branch connection.

Overview

A reverse connection method is typically used when a standard tee fitting cannot be directly installed or when a branch needs to be created from an existing tray. This method allows for flexibility in field installations and can be applied to wire mesh, ladder, or solid-bottom trays.

Steps for Reverse Connection

Prepare the TrayIdentify the location where the branch or tee will connect. Cut or bend the sidewall of the main tray to create a clearance for the branch tray. The cut should align with the intended branch angle and width ( ).

Install Brackets or Splice Plates

Use T

X brackets or universal splice plates to secure the branch tray to the main tray. Ensure that splice plates are installed in pairs and fastened with SBH or CNH bolts, with smooth heads facing inward to avoid cable damage ( ).

Attach Riser Links

For vertical or angled branches, install riser links on both sides of the branch tray. Riser links should always be installed in pairs to maintain stability and load distribution ( ).

Align and Secure

Align the branch tray with the main tray, ensuring proper level and orientation. Tighten all bolts and brackets to secure the connection. Check that the tray is stable and capable of supporting the intended cable load ( ).

Verify Load and Clearance

Confirm that the reverse connection does not interfere with cable installation or violate load limits. Ensure that the branch tray maintains proper spacing and support according to NEMA VE 2 guidelines ( ). Practical ConsiderationsOn-Site Modifications: Some installations require cutting the main tray to fit the branch, which is common in real-world projects ( ).

Safety: Only qualified personnel should perform modifications and connections, following proper protective equipment and load-handling procedures ( ). Support: Use trapeze or center-hung supports to maintain stability, especially for heavy cable loads ( ). By following these steps, a reverse connection for a cable tray tee can be safely and effectively implemented, allowing for flexible routing of cables in complex installations.