Method for marking cable tray tees

Cable tray tees are typically marked with manufacturer identification, material type, load rating, and directional or configuration indicators according to NEMA VE and IEC 61537 standards.

Key Marking Requirements

Manufacturer Identification: Every cable tray tee should display the manufacturer's name or logo to ensure traceability and compliance with standards (NEMA VE 1 and VE 2) and to facilitate maintenance or replacement. Material and Finish: The marking should indicate the material (e.g., steel, stainless steel, aluminum, or fiberglass) and any protective finish, such as galvanization or powder coating, which is critical for corrosion resistance and environmental suitability.

Load/

Span Class: Cable tray tees must be marked with the load or span class, which defines the maximum allowable load and span length for safe installation. This ensures that the tee is used within its structural limits. Configuration and Directional Indicators: Tees are often marked to indicate the orientation of the branch relative to the main run (e.g., left, right, or center branch).

This helps installers correctly align the tee with the main cable tray system and maintain proper cable routing. Compliance Standards: Markings should reference applicable standards, such as NEMA VE 1/VE 2 for metal and nonmetallic trays, CSA C22. 2, or IEC 61537 for international compliance.

This confirms that the tee meets recognized safety and performance requirements. Optional Markings: Some manufacturers include additional information such as part number, production date, or UL/CSA certification marks to assist with inventory management and regulatory compliance.

Practical Considerations

Visibility: Markings should be legible and durable, resistant to environmental factors such as moisture, UV exposure, or chemical contact. Placement: Typically, markings are placed on the side or top of the tee where they are easily visible during installation. Consistency: All tees in a system should follow the same marking conventions to avoid confusion and ensure proper installation.

By adhering to these marking requirements, cable tray tees can be correctly identified, safely installed, and maintained in accordance with industry standards, ensuring both operational safety and regulatory compliance.