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Mike Holt's Understanding Electrical Theory for NEC Applications
This comprehensive, full-color textbook teaches the fundamentals of electricity, how it works, and the physics behind it—essential knowledge for apprentices and seasoned electrical professionals alike. It helps readers build confidence, apply the National Electrical Code safely, and master key concepts through clear illustrations, examples, practice questions, summaries, and a full practice final exam. Topics covered include electrical fundamentals, safety, magnetism, Ohm’s and Watts laws, circuit types, alternating current, motors and transformers, protective devices, and general knowledge.