This is a great self-study book program that provides in-depth instruction on Theory, Code, and Calculations.

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
• Basic Electrical Theory Textbook
• Master Simulated Exam

Answer keys are included with all Mike Holt books.