E:
From the '08 NEC Handbook CD:
"Approved. Acceptable to the authority having jurisdiction."
Commentary from the Handbook......
See the definition of authority having jurisdiction and 110.2 for a better understanding of the approval process. Understanding NEC terms such as listed, labeled, and identified (as applied to equipment) will also assist the user in understanding the approval process.
Listed equipment will more readily be approved by an authority having jurisdiction where the authority accepts the laboratory's listing mark. Other options may be available for the jurisdiction to approve equipment, including evaluation by the inspection authority or field evaluation by a qualified laboratory or individual. Where an evaluation is conducted on site, industry standards such as NFPA 79, Electrical Standard for Industrial Machinery (if applicable), should be used.
As there are no specifics within Art. 670, the subject becomes a call for.....the electrician responsible to tie-in, and the AHJ...if it's a job to be inspected.
