Cable Tray Grounding

[meo]

When a cable tray system is used as equipment grounding conductors NEC Article 392.7 (B) (1) says that "The cable tray sections and fittings shall be identified for grounding purposes." How are they to be identified? Do you need to label the trays and fittings in some way? And, if so how?

 

[don_resqcapt19]

Re: Cable Tray Grounding

Identified (as applied to equipment). Recognizable as suitable for the specific purpose, function, use, environment, application, and so forth, where described in a particular Code requirement.
FPN: Some examples of ways to determine suitability of equipment for a specific purpose, environment, or application include investigations by a qualified testing laboratory (listing and labeling), an inspection agency, or other organizations concerned with product evaluation.