Overview
Mike Holt’s 2026 Understanding the NEC, Volume 1 textbook covers Articles 90–480.
Product Details
The publisher lists product code 26UND1, ISBN 978-1-960005-59-5, and 688 pages.
Practice Material
The product page lists 335 practice questions and describes the book as a way to learn NEC Articles 90–480.
Price and Scope
The listed price is $70. This is Volume 1, so confirm your required NEC edition and whether you need material beyond Article 480 before ordering.