Article 670 in the NEC covers Industrial Machinery. An electrician who maintains this type of equipment is sometimes required to rebuild or replace parts in the machine. This is not very easy work and takes a lot of time and knowledge to accomplish. I have worked in a machine shop and in a shop where there were plastics and metal working machine tools. This was good experience and helped me to broaden my understanding of the electrical industry. I was the NFPA Staff Liaison for NFPA 79. Now, withe the NEW Article 409 and UL 508A, the electrician will become more involved.
