C-10 Practice Test Introduction 50 Q&A

Welcome to your C-10 (Electrical Contractor) practice test! This exam is designed to help you prepare for the official California C-10 licensing exam by testing your knowledge of electrical theory, codes, safety practices, and trade calculations.

What to Expect:

• Questions Covering Key Topics:

  • National Electrical Code (NEC)

  • Electrical Calculations (Ohm’s Law, Voltage Drop, etc.)

  • Safety Standards (OSHA, NFPA 70E)

  • Wiring Methods & Materials

  • Grounding & Bonding

  • Blueprint Reading

• Format: Multiple-choice questions similar to the state exam.

• Time Management: Practice pacing yourself to ensure you can complete the real test within the allotted time.

Tips for Success:

✔ Review the NEC 2023 (or current adopted edition).
✔ Brush up on basic electrical formulas and load calculations.
✔ Take notes on areas where you struggle and revisit those topics.

Good luck! Use this practice test to identify strengths and weaknesses—you’re one step closer to becoming a licensed C-10 Electrical Contractor in California.