Electrical & Electrician App

Everything an electrician needs in one app: NEC wiring lessons, quizzes that explain the answer, an electrical wiring simulator and NEC exam prep with practice tests. Built for electricians, apprentices and students who work to the National Electrical Code.

READ REAL-WORLD WIRING GUIDES

Hundreds of illustrated electrical guides on wiring and installation, motors and motor starters, grounding and bonding, control and switching, transformers. Read one, then quiz yourself on it. Save guides to read offline on the job.

ELECTRICAL WIRING SIMULATOR

Wire circuits level by level. Place the battery, resistor and lamp, close the switch and watch voltage, current and resistance change. Learn how circuits behave before you touch a live panel.

QUIZZES THAT EXPLAIN THE ANSWER

Every question shows why the right answer is right and names the NEC section it comes from, so you learn the code, not just the answer key.

NEC EXAM PREP: 1,425 QUESTIONS IN 8 SECTIONS

Electrician exam prep built on the NEC, across eight sections of the code: from Article 100 definitions to branch circuits, load calculations, overcurrent protection, grounding and bonding and wiring methods. Practice section by section, follow your plan, then sit timed mock exams with worked answers. Useful for journeyman electrician and master electrician licensing exam practice and for checking what you really know.

NEC WIRING LESSONS

Step-by-step wiring lessons for your code: receptacles, switches and lighting, panels and breakers, GFCI and AFCI protection, grounding and bonding, box fill and conduit fill. Each lesson cites the NEC section behind it.

AI TUTOR

Stuck on a calculation? The tutor walks you through box fill, voltage drop, conductor ampacity and load calculations step by step, with the table values from the code.

STUDY PLANS AND FLASHCARDS

Type a topic and get a day-by-day study plan, or a flashcard deck in seconds. Learn a little every day.

TOPICS COVERED

Electrical wiring and wiring diagrams, residential and commercial wiring, grounding and bonding, branch circuits and feeders, GFCI and AFCI protection, overcurrent protection, conduit fill, box fill, voltage drop, ampacity and conductor sizing, load calculations, services, motors and motor controls, transformers, three-phase power, Ohm's law and electrical formulas, electricity basics, AC and DC circuits, troubleshooting, solar PV and EV charging.

BUILT FOR

Electricians who want a quick daily refresher, apprentice electricians, journeyman and master electrician candidates studying for the licensing exam, electrical and engineering students, maintenance technicians, and anyone learning how electricity works.

Prefer another code? Switch to the CEC, BS 7671, AS/NZS 3000, DIN VDE or IEC 60364 any time.

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