Ray C. Mullin is a former electrical instructor for the Wisconsin Schools of Vocational, Technical, and Adult Education. Prior to his retirement, he served as district manager, regional manager, regional vice president, and ultimately director technical liaison for a major electrical manufacturer. He also served on the NFPA Code Making Panel 4 of the National Electrical Code. A former journeyman and supervisor for residential, commercial, and industrial installations, he has taught electrical apprentice and journeyman courses, conducted numerous technical and Code seminars, written many articles for electrical trade publications, and consulted for electrical equipment manufacturers on legal issues. A former member of the Executive Board of the Western Section of the International Association of Electrical Inspectors, he is a member of the Institute of Electrical and Electronic Engineers and National Fire Protection Association, Electrical Section. He attended the University of Wisconsin, Milwaukee School of Engineering, and Colorado State University.
Phil Simmons is the founder of Simmons Electrical Services, where he consults on the National Electrical Code and other codes. Mr. Simmons also writes, edits, illustrates, and produces technical publications, providing plan review of electrical construction documents and inspection of complex electrical installations. In addition to developing training programs related to electrical codes and safety, he has presented on these subjects at numerous seminars and conferences for universities, the National Fire Protection Association (NFPA), the International Association of Electrical Inspectors (IAEI), the U.S. Department of Defense, and private clients. He has also consulted on lawsuits involving electrical injury and property damage and is the co-author and illustrator of numerous textbooks on electrical topics. Mr. Simmons serves NFPA on Code Making Panel-5 of the National Electrical Code Committee (grounding and bonding), and he previously served on the NFPA Standards Council, the NEC Technical Correlating Committee, the IAEI, and Underwriters Laboratories. He is a retired member of the International Brotherhood of Electrical Workers.