Mike Holt's Illustrated Guide to Understanding the National Electrical Code, Volume 1 Textbook, Articles 90 - 480, Electrical Exam Preparation, 2026 NEC

Everyone in the electrical industry needs to master the Code. Our best-selling book, Understanding the NEC Volume 1, makes it easy to learn Articles 90 - 480. Whether you are an electrician in the field who needs to understand how to install safely, or a contractor who wants to make sure their team is installing projects according to Code while also keeping costs down, this book is for you. Electrical Inspectors need to understand the Code in order to enforce compliance with the Code equitably and consistently. 

In all of these instances the need to understanding and apply the NEC is paramount. How can you make sure you get this right? The answer is Mike Holt’s Illustrated Guide to Understanding the National Electrical Code. No other textbook takes you step-by-step through NEC articles like Mike’s authoritative Understanding the National Electrical Code textbooks. What makes this book so effective is the clear writing style, the Author’s Comments, the amazing detailed full-color illustrations that help you visualize the concepts being discussed, and the examples that are broken down step-by-step. The chapter questions help you test your knowledge as you go. This book sets the standard in NEC education and is used extensively throughout the country. 

This resource has proven itself in the field and in the exam room. And now you can rely on the latest edition to provide you with the rock-solid foundation of NEC knowledge necessary to do your job with accuracy and confidence.

** Answer Keys included with all Mike Holt books