Mike Holt's Understanding the NEC Vol.1 DVD Program, 2020 NEC: Mike Holt: 9781950431373: Amazon.com: Books
Mike Holt Electrical Calculations - 2014 Calculations DVD Library
Mike Holt's Illustrated Guide to Understanding NEC Requirements for Grounding Vs Bonding Based on the 2014 NEC National Electrical Code Brand Book, book, png | PNGWing
Understanding the 2020 National Electrical Code, Volume 1 Workbook
About Mike Holt
Mike Holt Code Changes - 2020 Changes to the NEC Streaming Audio