Second year 14 lessons About 3.5 hours in all

Second-year electrical apprentice program

Second year is where the trade moves from DC to AC — and where most of the “why does it do that?” questions get answered. Thirteen lessons take you from the sine wave to three-phase motors, then back to the job: lighting controls, services and panels, wiring methods, voltage drop, and a method for finding faults. Each lesson has a drawing, worked examples with real numbers, the mistakes people make on site, and a quiz that marks itself.

Work through them in order if you are studying for your second-year block; each one leans on the one before. Or dip into whichever one your class is on this week. The review quiz at the end covers the whole year in fifteen questions. Everything here is the physics and the method — the rules that turn it into an installation are in your code book (the Canadian Electrical Code, or the NEC in the US), and your school and your journeyperson have the final word.

The lessons, in order

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Tools for the second year

Calculators that go with these lessons. Each one shows its working underneath, and every result can be emailed, copied or printed so it ends up in your notes.

Preguntas frecuentes

What does a second-year electrical apprentice learn?

Mostly alternating current and what it does: the sine wave and RMS values, inductance and capacitance, reactance and impedance, power factor, transformers, three-phase systems, and how motors turn. Alongside that come the practical topics — lighting controls, services and panels, wiring methods, voltage drop — and a proper troubleshooting method. The exact outline varies by province or state and by school, but the theory is the same everywhere.

Do I need to finish the first year first?

You should be comfortable with Ohm’s law, the power formulas and series-parallel circuits, because every second-year lesson uses them. If any of that is shaky, the first-year program covers it; its review quiz is a quick way to check.

Is this enough to pass my block or level exam?

It is study help, not a replacement for your school’s course or your code book. Use it to understand the ideas and to practise the arithmetic, then work through your program’s own material and the code questions, which depend on your jurisdiction’s code edition.

Does my progress save?

Yes, in this browser. Each lesson’s quiz remembers your answers and your best score, and the list below ticks a lesson once you pass its quiz at 80% or better. Nothing is sent anywhere unless you have signed in to sync.

Ver también

First-year program — the DC basics this year builds on.
Start here — the short path through the site’s diagrams and drills.
Practice drills — timed practice on the arithmetic.
Glossary — every term in these lessons, in plain words.
Formula sheets — printable, for the back of your code book.

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