What identification must be present on steel or aluminum cable tray systems used as equipment grounding conductors?

In the context of equipment grounding conductors, identification plays a crucial role in ensuring safety and compliance with electrical codes. Steel or aluminum cable tray systems used as equipment grounding conductors must be clearly identified as such to prevent any confusion with other types of conductors. This identification enhances safety by ensuring that anyone working with or around electrical installations understands that the tray serves a grounding function.

While painting the cable trays green is a common practice to indicate grounding conductors, it is not a universal requirement, and relying solely on color can lead to misunderstandings. Marking with load capacity is more pertinent to the structural integrity and use of the tray, rather than its function as a grounding conductor. Including a company logo does not serve the purpose of indicating grounding functions and is irrelevant to safety in this context.

Therefore, explicitly marking the cable tray systems as equipment grounding conductors is essential to meet electrical safety standards and promotes clear identification in the installation environment.