Master the National Electrical Code
The ultimate study companion for electricians and electrical professionals preparing for NEC certification exams. Practice with real exam-style questions covering all NEC chapters.
Why Choose NEC Mastery?
Everything you need to pass your National Electrical Code exam with confidence.
8000+ Practice Questions
Comprehensive question bank covering all 8 NEC chapters with detailed explanations referencing specific code sections.
Chapter-Wise Study
Organised into 9 topics matching the NEC chapter structure. Study exactly what you need for your exam.
Mobile App Available
Study anywhere with our iOS app. Includes progress tracking, weighted mock exams, flash cards, and offline access.
Built for Your Specific Exam
13 exam types with customizable chapter weightages — your mock tests match the real thing.
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Practice by Chapter
Choose a chapter to start practising. Each topic includes free questions you can try right now, plus thousands more in the app.
Chapter 1
Definitions
Essential definitions used throughout the NEC, including terms for circuits, equipment, grounding, and wiring methods that form the foundation of electrical code interpretation.
Chapter 1
General Requirements
Fundamental requirements for electrical installations including examination of equipment, installation and use, spaces about equipment, and electrical connections.
Chapter 2
Wiring and Protection
Requirements for branch circuits, feeders, services, overcurrent protection, grounding, and surge protection to ensure safe electrical distribution.
Chapter 3
Wiring Methods and Materials
Covers conductor types, cable assemblies, raceways, boxes, conduit bodies, and fittings used in electrical installations.
Chapter 4
Equipment for General Use
Installation requirements for switches, receptacles, lighting, appliances, motors, transformers, and other common electrical equipment.
Chapter 5
Special Occupancies
Electrical requirements for hazardous locations, healthcare facilities, assembly occupancies, theaters, carnivals, marinas, and agricultural buildings.
Chapter 6
Special Equipment
Requirements for electric signs, manufactured buildings, swimming pools, solar PV systems, generators, fire pumps, elevators, and electric vehicle charging.
Chapter 7
Special Conditions
Covers emergency systems, legally required standby systems, optional standby systems, interconnected electric power production sources, and energy storage systems.
Chapter 8
Communications Systems
Requirements for communications circuits, radio and television equipment, CATV systems, network-powered broadband, and premises-powered broadband.
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