Based on the 2023.
Mike Holt 2023 Understanding the NEC Vol. 1 and Vol. 2 textbooks W/ Answer Key
Mike Holt's Master Electrician Practice Exam, 2020 NEC Paperback
2023 Mike Holt's Electrician Exam Prep Book & Master Electrician Simulated Exams
Electrical Exam Prep Master/Contractor Textbooks, 2023 NEC -- Mike Holt
Mike Holt's Understanding the NEC, VOL 1 Textbook (Art 90-480), 2023 NEC
Mike Holt's Understanding the NEC Workbook (Art. 90-480), 2023 NEC
