California Electrician Exam Prep
CAEverything you need to prepare for the California General Electrician exam - free NEC calculators, licensing info, and exam prep tools.
California Licensing Requirements
What You Should Know
- Open-book exam — NEC codebook is provided at the testing center
- 100 questions in a single 4.5-hour block (no split portions like some states)
- Must complete 8,000 hours under a certified electrician for General certification
- Five certification types available: General, Residential, Fire/Life Safety, VDV, and Non-Residential Lighting
Free NEC Calculators & Tools
These tools work with the 2023 NEC used in California. No sign-up required.
Conduit Fill Calculator
FreeCalculate conduit fill percentage per NEC Chapter 9. Select conduit type, size, and wire configuration to verify code compliance.
Voltage Drop Calculator
FreeCalculate voltage drop for any circuit. Verify compliance with the NEC 3% branch circuit and 5% total drop recommendations.
Box Fill Calculator
FreeCalculate electrical box fill per NEC 314.16. Add conductors, clamps, devices, and grounds to verify box capacity.
Breaker Size Calculator
FreeDetermine the correct breaker size for your circuit. Accounts for continuous and non-continuous loads per NEC 240.6(A).
Ohm's Law Calculator
FreeCalculate voltage, current, resistance, and power using Ohm's Law. Enter any two values to find the other two.
Wire Size Calculator
FreeFind the right wire size for your circuit. Accounts for ampacity, temperature derating, bundling, and voltage drop.
California Exam Prep Platform
A full practice platform designed for the California General Electricianexam. Here's what's included:
- Question bank based on the 2023 NEC
- Timed practice exams in PSI format
- Progress tracking & weak-area analysis
- California-specific licensing info and study guides
Ready to Start Studying?
Try the free diagnostic quiz or unlock the full question bank, timed exams, and progress tracking.