Electrical Level 3, 12th edition

For courses in electrical systems.

A complete curriculum, for one of the largest US occupations

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, trainees will 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.

Hallmark features of this title

Practical approach to learning a craft

• Step-by-step instructions throughout the text guide trainees through tasks, technical procedures and math equations.
• An introductory page before each module lists objectives, trade terms and performance tasks.
• Trade features present technical tips and professional practices based on real on-the-job scenarios.

Engaging resources

• Interesting videos related to topics are linked from QR codes.
• Review questions test students’ knowledge of the content they’ve just read.
• Profiles of industry leaders offer trainees inspiring first-hand insight.

New and updated features of this title

Alignment with 2026 electrical codes

• UPDATED: The 2026 National Electrical Code^® was incorporated throughout the 12th Edition, resulting in fully updated, industry-aligned content.
• UPDATED: All illustrations and instructional materials were revised to reflect the latest code requirements and technological advancements.

New and reorganized content

• NEW: A new dwelling load calculations module combines all residential load calculations topics into one module, with improved step-by-step instructions for calculations.
• NEW: A new alternative energy module discusses safety issues, systems integration requirements, and equipment needs for solar, wind and other alternative energy sources.
• REVISED: The transformer modules were merged to join relevant concepts, and the controls modules were consolidated, improving clarity and coherence.