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California Electrical Contractor Exam Guide

2026 Edition

The California Electrical Contractor (C-10) exam covers the National Electrical Code (NEC), state-specific safety orders, and business law.

What to Study

  • NEC Code Calculations
  • Grounding and Bonding
  • Wiring Methods
  • Motors and Transformers
  • State Safety Orders (Cal/OSHA)
  • Contract Law & Business Management

Ready to test your knowledge?

Take our free practice test to see where you stand. Our questions simulate the actual exam format and difficulty.