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, and Industrial

by (author) F.P. Hartwell & Herbert P. Richter

Practical Electrical Wiring: Residential, Farm, Commercial & Industrial

Based on the 2011 National Electrical Code

by (author) Herbert P. Richter & Frederic P. Hartwell

Practical Electrical Wiring: Residential, Farm, Commercial and Industrial

Based on the 2008 National Electrical Code

by (author) Herbert P. Richter & F.P. Hartwell