Study tools that work the way class does
The Electrician Toolkit is a set of free, interactive study tools built for electrician students. The idea is simple: you learn this trade by doing it. So instead of just reading about a 3-way switch or an Ohm's Law problem, you can wire it, solve it, and see what happens — right in your browser, on whatever device you've got.
The tools
3-Way / 4-Way Switch Simulation
Drag in a panel, breaker, switches, and a light, then wire the terminals yourself. The light reacts in real time, so you can see exactly how travelers and the common terminal behave. Hit a demo button to load a working circuit, or "Make Fault" to learn how to troubleshoot one.
Electrical Math
Plug in what you know and solve for what you don't — Ohm's Law, power, and series/parallel resistance. Use it to check homework, study for quizzes, or sanity-check your work on the job.
Motor Lab
Explore motor behavior interactively so the concepts stick instead of staying abstract on a whiteboard.
Trig & Conduit
Work the trig behind conduit bends — offsets, saddles, and angles — so your measurements come out right the first time.
The 2020 NEC Practice Test
The practice test is the heart of the toolkit — 500+ questions built from the class study guide. Here's the key thing: it won't give you the answer. The real code test is about knowing how to find a rule in the book under time pressure, so this test trains that skill instead of letting you memorize a key.
Clickable definitions
Tap any highlighted term in a question to see what it means, right there — no flipping through a glossary.
Read-aloud audio
Hear any question read out loud. Great for studying on the go or if reading dense code language slows you down.
"How do I find this?" hints
Instead of the answer, you get coached on how to track the rule down in the code book yourself — the exact skill the real test is checking.
Built-in tutor
Stuck? Ask the tutor. It teaches the concept and how to navigate to the rule, but it will never just hand you the answer.
Tips to get the most out of it
- Keep your code book open next to you. The point is to get fast at finding rules — use the hints to learn where to look, then go look.
- On the switch sim, try the demos first, then clear it and wire one from scratch. Building it yourself is where it clicks.
- Use the tutor to understand the why behind a rule, not just to get unstuck.
- Everything is based on the 2020 NEC — always verify against your local adopted edition when it counts.