A passing grade of 80% or higher is required to advance to Lesson 3.
Additional Training Resource for This Lesson:
My Mission: Teaching Understanding, Not Memorization
The goal of Jersey Mike HVAC Electrical Training is simple: To help you understand electrical systems well enough to figure out equipment you've never encountered before.
As an HVAC technician, you're going to encounter equipment you've never worked on, wiring diagrams you've never seen, and electrical problems you haven't experienced before.
You can't possibly memorize every piece of equipment or every problem you'll encounter throughout your career.
But you can learn the electrical principles that make those systems work.
And that's what this course is designed to teach you.
Why This Course Is Different
I've always believed that complicated subjects can be made understandable when they're explained properly.
But understanding an explanation and being able to apply what you've learned are two different things.
That's why this course goes beyond video lessons.
Each lesson introduces electrical principles using plain English, practical demonstrations, and examples from real HVAC equipment.
Then comes the part I believe is especially important: putting that understanding to work.
Assessments That Actually Teach You Something
Most tests are designed to find out what you know.
I want these assessments to help you learn.
You'll encounter questions that require you to think through an electrical situation, interpret a measurement, or apply a principle you've just learned.
If you answer incorrectly, you won't simply receive a red X and move on.
Instead, you'll watch a short explanation showing you why the correct answer is correct and why the other choices aren't.
Then you'll get a second opportunity, but with a different question testing the same understanding.
That distinction matters.
I don't want you memorizing the answer to a particular question. I want you understanding the principle well enough to recognize it in an entirely different situation.
Even if you answer correctly the first time, the explanations are there to reinforce what you've learned.
The assessment isn't just something you take after the lesson. It's part of the lesson itself.
Why the Video Lessons Are Free
I believe quality HVAC education should be accessible.
That's why my instructional videos will remain available for free on YouTube.
You can watch them, learn from them, and return to them whenever you need a refresher.
The additional training experience—interactive assessments, explanations, practice exercises, and eventually more advanced, on-going diagnostic challenges is where I'm investing the extra time and effort.
The first three lesson assessments are also free so you can experience the format yourself before deciding whether to continue with the paid training.
I want you to know exactly what you're getting and whether it's helping you learn.
Where We're Headed
As the course progresses, we'll move from basic electrical circuits into the components, wiring, controls, and electrical sequences found in HVAC equipment.
Eventually, I want to put you in front of an electrical system no one has ever seen before.
You'll have to study its wiring diagram, understand how it's supposed to operate, interpret electrical measurements, and figure out why it isn't working.
Everything involved will be based on electrical principles you've already learned.
But the equipment itself will be unfamiliar.
Because that's what happens in the real world.
And if you can work through that challenge using your understanding instead of memorized troubleshooting procedures, then this course will have accomplished exactly what I set out to do.
The Bottom Line
I'm not trying to teach you everything there is to know about HVAC.
I'm trying to give you a solid electrical foundation that you can build on throughout your career.
I want you to finish a lesson understanding something you couldn't understand before.
And I want you to finish this course with the confidence to approach unfamiliar electrical systems, think through how they work, and begin figuring things out for yourself.
That's the mission.
— Jersey Mike HVAC
Assessment Progress0 of 1 completed (0%)
Current Test Score0 of 10 points (0%)
Switch OPEN · Load OFF
Choose a condition, then move the meter probes to find the voltage drops.
VOLTAGE READING
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● Red: A● Black: F
LESSON 2 • QUESTION 1
Measure Across the Closed Switch
Using the voltage lab: Turn the power ON, CLOSE the switch, and place your meter probes across the closed switch.
What voltage do you measure, and what does that reading tell you?
A. 0 V — There is no power in the circuit.
B. 0 V — Both sides of the switch are at the same electrical potential.
C. 24 V — The closed switch is dropping the full supply voltage.
D. 24 V — The motor is receiving the full supply voltage.
Explainer Video
Video Placeholder
Question 1 — Second Attempt Explained
Correct answer: B — 24 V. With the switch closed and power on, the motor has the full 24 V across its terminals (D and E). That shows the motor is being supplied with rated voltage; voltage alone does not prove it is mechanically operating correctly.
A: Incorrect. A normal energized motor has 24 V across it in this lab.
C: Incorrect. D and E are at different electrical potentials.
D: Incorrect. 24 V across the motor does not, by itself, prove its winding is open.