Electrical Exam Prep Journeyman Textbooks, 2020 NEC This self-study book program provides in-depth instruction on Theory, Code, and Calculations. You can use it to prepare for the Electrical Journeyman license exam based on the 2020 NEC. It’s recommended for those with at least one year of experience and some basic electrical background. This library includes: · Electrical Exam Preparation Textbook. · Understanding the NEC, Volume 1, Articles 90-480 Textbook. · Understanding the NEC, Volume 2, Articles 500-820 Textbook. · Understanding Electrical Theory Textbook. · Journeyman Practice Exam.