NEC Mastery

NEC Mastery is a comprehensive study and field reference app for apprentices, journeyman and master electricians, contractors, inspectors, examiners, and other electrical professionals. Prepare for exams based on the 2023 NEC Code with 2024 updates using more than 8,000 exam-style questions, detailed explanations, mock tests, customizable syllabuses, performance tracking, and instant feedback.

The app includes English and Spanish support, 20 NEC-referenced electrical calculators, an offline quick reference library, searchable code topics, bookmarks, dark mode, adjustable text size, and read-aloud support. Track apprentice or journeyman work hours with charts, goal tracking, PDF exports, and iCloud sync. Topics include ampacity, wiring methods, grounding, motors, transformers, load calculations, voltage drop, conduit fill, and more.