Mike Holt 2023 Understanding the NEC, Volume 1 & 2 Textbook Set w/ Answer Keys
This textbook is the same edition used in my friend’s class last year.
Mike Holt 2023 Understanding the NEC Book Package with Answer Keys
You will find that this textbook breaks down difficult topics into manageable chunks.
Mike Holt’s 2023 Electrical Exam Preparation Textbook with Answer Key
A nice touch in this textbook is the quick reference cards inside the cover.