Electrical Trade Terms

What is in this deck

With this deck you learn the electrical trade's vocabulary and its reasoning: Ohm's law, grounding against bonding, conductor sizing, protection and safe work practice.

Three ideas carry most of the trade: Ohm's law, the difference between grounding and bonding, and the fact that an overcurrent device protects the conductor rather than the appliance.

100 cards from there. Series and parallel, impedance and power factor, then the wiring itself: conductor colours and what a re-identified white wire means, why a subpanel separates neutral from ground, what box fill is for, and why a terminal has a torque specification. Then protection, motors, testing and the code as it is actually applied, which is through an inspector's interpretation.

The National Electrical Code is a model code published by a private body, and none of its text is reproduced here. What is here is the physics and the practice behind it, and the edition in force in your jurisdiction remains the authority.

The categories decide what comes up: start with “Boxes” alone and add the rest when you are ready.

What you learn

• Ohm's law, power and what impedance adds in AC
• Grounding against bonding, and why a subpanel differs
• Conductor sizing, box fill, derating and voltage drop
• GFCI, AFCI and what each one actually detects
• Lockout, live-dead-live and arc flash

The categories

17 categories sort the 100 cards. You can filter by category and take on what is due right now.

1. Boxes
2. Circuits
3. Code
4. Conductors
5. Distribution
6. Drawings
7. Fundamentals
8. Methods
9. Motors
10. Practice
11. Protection
12. Raceways
13. Safety
14. Systems
15. Testing
16. Theory
17. Wiring

Learning with Qardbox

You see a card, you think, you turn it over and say whether you knew it. A round asks nothing more of you, and how the app works out the next date from that is on the page about FSRS-6.

What sits comes back less often, what wobbles comes back soon. You set a daily goal, and when nothing is due the app tells you exactly that instead of inventing work for you. How a round goes is shown on the learning page.

Everything stays on your device. No account, no sign-up, no ads. After the purchase the deck sits in your library like any other subject and can be studied, reordered and extended just like your own.

What it costs, and what it doesn’t

Qardbox itself costs nothing, and it stays that way. Every function is there from the start, with no subscription, no ads and no tiers; what that rests on is on the page about what it costs.

Your own cards stay unlimited, and decks from friends or from the family you read in without a limit, from a file as well. You do not need this deck in order to learn with Qardbox.

It is a shortcut: 100 checked cards for €0.99, once, with Family Sharing. The work you would otherwise do is already done. The App Store shows the price in your currency.