About Frederic P. Hartwell Books by Frederic P. Hartwell Wiring Simplified Based on the 2017 National Electrical Code® by (author) Frederic P. Hartwell, Herbert P. Richter & W.C. Schwan Practical Electrical Wiring: Residential, Farm, Commercial & Industrial Based on the 2011 National Electrical Code by (author) Herbert P. Richter & Frederic P. Hartwell
