Electrical Level 3, 12th edition

Electrical Level 3 delves into advanced electrical skills, from sizing electrical services to troubleshooting transformers to integrating alternative energy systems. By the end of the four-part series, you’ll have the confidence and practical expertise to install, maintain and repair electrical systems across residential, commercial and industrial jobsites.

The 12th Edition has been fully updated to align with the 2026 National Electrical Code^®, including all content, illustrations and instructional materials. Level 3 features merged modules on transformers, consolidated modules on controls and a new alternative energy module covering key safety, equipment and systems requirements.