For 18 years, Charles R. Miller owned and operated a successful commercial electrical contracting company (Lighthouse Electric Co., Inc.) in Nashville, Tennessee. Now an accomplished author and educator, Mr. Miller specializes in leading customized seminars on the National Electrical Code (NEC), as well as National Fire Protection Association (NFPA) 70E. Class and seminar attendees have included employees of companies such as Ford, A. O.

Smith, and The Aerostructures Corporation, as well as academic institutions such as Tennessee State University, Vanderbilt University, and Purdue University. Mr. Miller also wrote and illustrated the monthly "Code In Focus" column in ELECTRICAL CONTRACTOR MAGAZINE, and he co-hosted a home improvement radio talk show in Nashville for more than three years.