Ray C. Mullin: Former electrical instructor for the Wisconsin Schools of Vocational, Technical, and Adult Education. Former member of the International Brotherhood of Electrical Workers. Currently a member of the International Association of Electrical Inspectors, Institute of Electrical and Electronic Engineers, National Fire Protection Association, Electrical Section. He has served on the NFPA Code Making Panel 4 of the National Electrical Code. Completed electrical apprenticeship training program. Worked as journeyman and supervisor for residential, commercial, and industrial installations. Taught electrical apprentice and journeyman course. Conducted numerous technical and Code seminars. He has written many articles that have appeared in electrical trade publications and has done consulting to electrical equipment manufactureres on legal issues. He has served on the Executive Board of the Western Section of the International Association of Electrical Inspectors and serves on the Electrical Commission in home town. He attended the University of Wisconsin, Milwaukee School of Engineering, and Colorado State University.Mullin, Ray C. is the author of 'Electrical Wiring Residential - Laboratory Manual', published 2008 under ISBN 9781418050993 and ISBN 1418050997.