McGraw-Hill's National Electrical Code 2020 Handbook, 30th Edition

The definitive guide to the National Electric Code—thoroughly revised for 2020 rules and regulations

Updated to fully align with the 2020 NEC, this trusted on-the-job reference contains plain-language explanations, advice, and analysis for every provision. You will get discussions of the rationale behind specific rules that enhances your understanding of both meaning and application. This handbook ...