ArcReady's Theory track is 178 questions across 27 topics covering the electrical fundamentals behind every safe field decision — from basic Ohm's Law to three-phase power distribution and fault diagnosis. Theory certification unlocks after you've passed Safety Certification-Prep, on the reasoning that you shouldn't be reasoning about live circuits before you know how to stay safe around them.
What You'll Be Tested On
| Topic Cluster | What It Covers |
|---|---|
| Ohm's Law & Power | E = I × R, power formulas, and the algebra variations exams actually ask |
| Series Circuits | Current, voltage drop, and resistance behavior in series |
| Parallel Circuits | Branch current, voltage consistency, and total resistance in parallel |
| AC Theory | Alternating current fundamentals, frequency, and reactance |
| Transformers | Turns ratio, step-up/step-down behavior, and core construction |
| Three-Phase Systems | Wye vs. delta, line vs. phase voltage, and balanced load math |
| Schematic Reading | Ladder diagram symbols, NO/NC contacts, coils, and control-circuit logic |
| Fault Diagnosis | Systematic troubleshooting logic — the same skills tested in the Virtual Lab |
| Meters & Test Equipment | Voltmeters, ammeters, ohmmeters, clamp meters, and CAT safety ratings |
Why Theory Matters for Safety Work
Every safety decision on a real panel — whether a circuit is actually de-energized, whether a reading makes sense, whether a fault is upstream or downstream of where you're standing — depends on understanding the circuit theory underneath it. The Theory track exists because "follow the checklist" only works if you understand why the checklist works.
How the Theory Track Works
Same three-mode structure as Safety: Study Mode for flashcard review, Practice Exam for an untimed scored run, and a timed Certification-Prep Exam. Theory certification requires completing Safety Certification-Prep first.
Put the theory to work in the interactive fault-diagnosis lab.