Electrical Level 2 builds on core concepts by exploring techniques for generating alternating currents, grounding electrical systems and installing conductors, lights and motors, among other skillsets. 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. The training material was also strategically reorganized and streamlined through the merging of related modules on lighting, motors, circuit breakers and fuses.