An electrician installs, tests and repairs the wiring that powers buildings, from a home's panel to a factory's motor controls. In the US you almost always learn through an apprenticeship: about 4-5 years, roughly 8,000 hours of paid on-the-job training plus about 144 hours a year of classroom theory. Most states then require a journeyman license. Free resources cannot replace paid hands-on hours under a licensed electrician, but they let you show up already knowing Ohm's Law, the NEC basics and safe habits, which gets you hired. The path is: learn theory and safety, land an apprenticeship or
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Every stage from beginner to expert, with lessons, practice drills, projects, interview questions and free resources. Free with a Rolearch account.
Stage 1 of 4 · about 12 weeks
Understand electricity and safety before touching a panel. Learn voltage, current, resistance and power (Ohm's Law V=IR, P=VI), series vs parallel circuits, AC vs DC, and basic hand tools. Study OSHA electrical safety, lockout/tagout and PPE. Practice reading simple diagrams and doing the trade math (fractions, algebra, conduit bends). Build a low-voltage practice board (battery, switch, LED, multimeter) to see theory work.
Electrical safety, PPE and lockout/tagout
Electricity can kill you quickly and quietly. Every employer, apprenticeship and inspector cares first about whether you work safely. Learn this before you touch any real circuit, because bad habits form early and are hard to break.
Voltage, current, resistance and power (Ohm's Law)
Every electrical decision, from wire size to breaker size, comes from how these four quantities relate. If you understand them, code rules start to make sense instead of feeling like random numbers.
Series and parallel circuits, AC vs DC, and meter use
Houses are wired mostly in parallel and switches are wired in series with the load. If you can predict how a circuit behaves and then prove it with a meter, you are already thinking like an electrician, and troubleshooting later will be much easier.
Reading diagrams and using basic hand tools
Electricians work from drawings and sketches daily. Reading them correctly keeps you safe and prevents costly mistakes. Good tool habits make your work cleaner, faster and safer, and show a boss you take the trade seriously.
Trade math and conduit bending basics
Nearly every electrical task involves numbers: wire length, box spacing, load, and bend measurements. Electrician aptitude tests also test algebra and reading, so strong math now opens apprenticeship doors later.
Then 3 more stages (about 288 weeks in all) with lessons, drills, projects, 10 interview questions with strong answers and free resources.