About the Editor E. K. GREENWALD developed a series of courses on electrical safety which are taught annually in the U.S. and abroad. He is an Associate Professor of Engineering Professional Development at the University of Wisconsin, Madison, as well as President and Chief Engineer of Energy Analysis, Inc., a firm that performs energy-related engineering and economic studies for industry and government. As a private engineering consultant, Dr. Greenwald has worked for the U.S. Air Force, U.S. Navy, IBM, ITT, AMOCO Chemical, U.S. Post Office, and numerous other facilities. He is a Registered P...