What term is used to describe equipment recognized as suitable for a specific purpose or application?

The term "identified" is used to describe equipment that is recognized as suitable for a specific purpose or application according to recognized standards and guidelines. This term encompasses the idea that the equipment has been specifically marked or noted for its appropriate use in a given context, often based on criteria established by a governing body or through industry standards. In the electrical field, proper identification of equipment ensures that it is appropriate for the intended use, thus contributing to safety and efficiency.

The other terms refer to different levels of validation or recognition. "Approved" typically involves a formal process of examination and acceptance; "certified" usually means that the equipment has met specific standards and has been verified by a recognized organization; while "designated" may imply an assignment of a particular role or function without necessarily indicating an assessment of suitability for specific applications.