Ohm
2,847 apprentices enrolled
91% first-attempt pass rate
Find Your Path
to the License
A 5-question diagnostic builds your personalized NEC exam roadmap — then a free starter bundle gets you studying in minutes.
Series Circuit — Training Path
No credit card · Instant access · Cancel anytime
Build Your Personal Roadmap
Answer 5 quick questions. We'll reorganize a course grid tailored to your exact gap — before you ever sign up.
Where are you in your electrical career?
Got it!
Loading next question…
Real electricians. Real licenses.
91% of Ohm learners pass on their first attempt. Here's what the other 9% wish they'd done.
"I failed the Article 250 section twice before finding Ohm. The grounding module broke it down into circuit diagrams I actually understood. Passed on my third attempt with an 84."
Marcus Webb
2nd Year Apprentice → Journeyman
IBEW Local 11, Los Angeles
2,847
Active Learners
91%
First-Attempt Pass
6 wks
Avg to Exam-Ready
50
States Covered
NEC Article 250 — Grounding Basics
Watch before you commit.
This 5-minute walkthrough covers the most-failed NEC topic — Article 250 Grounding & Bonding — using a real residential panel wiring scenario. No fluff, no filler.
What's covered
- Why equipment grounding conductors (EGC) and neutral conductors are separated at the panel
- How to correctly size the grounding electrode conductor per Table 250.66
- The #1 bonding mistake inspectors flag on residential sub-panels
- Three practice questions from real state exams
Start My Free Plan
Get your full personalized module bundle — just email + first name.
No credit card · Instant access