Focused lesson
One practical concept with clear objectives and a realistic time estimate.
Residential electrical study guide
Build the theory underneath the field work.
A completely free, self-paced course for strengthening electrical theory, code navigation, and safety knowledge—available wherever the work takes you.
- No account
- No paywall
- Works offline
Course method
Learn the “why” behind work you already recognize.
Every module connects theory to field conditions, then asks you to work the math, trace the system, or find the applicable rule.
Worked application
Use familiar residential equipment to make the theory useful.
Field check
Explain, calculate, trace, or locate the rule before moving on.
First semester
Eight foundations. One connected system.
01 02 03 04 05 06 07 08
What electricity is actually doing
35 min
Understanding the residential system
30 min
Grounding, bonding, and fault clearing
40 min
Overcurrent protection and conductor sizing
45 min
Learn to navigate the NEC
35 min
Residential branch circuits
50 min
GFCI and AFCI protection
40 min
Electrical safety
45 min
Safety first
Education supports training. It does not replace it.
Always follow the adopted code, local amendments, manufacturer instructions, employer procedures, permit requirements, and qualified-person safety training.