VoltageLab: NEC Exam Prep

Voltage Lab

In-app purchases

About this app

Get ready for your Journeyman Electrician exam with focused electrician exam prep built around the NEC (National Electrical Code / NFPA 70). Practice high-yield questions, review explanations, and track your progress so you know exactly what to study next.

Whether you’re an apprentice, working electrician, or student, this app is designed for daily practice and real exam confidence.

What you get
• Journeyman Electrician practice tests (MCQ)
• NEC exam practice questions by topic and level
• Answer explanations to learn fast from mistakes
• Progress tracking (accuracy, weak areas, recent attempts)
• Video learning + quick quizzes to reinforce concepts
• Challenge your friend with Quiz Test

High-yield NEC topics included
• Wiring Methods & Conductors (Chapter 3)
• Grounding & Bonding (Article 250)
• Services & Feeders (230/215 concepts)
• Overcurrent Protection (Article 240)
• Boxes, Conduit Fill & Sizing (Article 314 + fill basics)

Built for USA exam prep
• Targets the most common areas tested on Journeyman Electrician licensing exams
• Helps you practice consistently and improve weak topics over time

Disclaimer: This app is for study and practice only. It is not affiliated with NFPA, any licensing board, or any exam provider. Always verify with the latest NEC edition and local requirements.

Support: [e-mail]

What’s new

Improve the Home UI Design
Improve the Category screen UI
Improve the Quiz Playing screen UI
Fix some known issues