Lesson 6: Wiring Diagrams, Symbols, and Cable Identification
Learn how to read single-line diagrams, multi-line diagrams, switches, outlets, and grounding symbols.
Archives: Lessons
Lesson 5: Electrical Calculations and Units
Practice breaker capacity basics, voltage drop basics, and unit conversion methods that are common in exam questions.
Lesson 4: AC, DC, Frequency, and Phase Basics
Understand alternating current, direct current, frequency, single-phase supply, and three-phase supply at a practical level.
Lesson 3: Series and Parallel Circuits
Learn how resistance and current behave differently in series and parallel circuits.
Lesson 2: Ohm’s Law and Power
Use V = IR and P = VI to solve the most common written exam calculation questions.
Lesson 1: Electrical Theory Essentials
Start with voltage, current, resistance, and the basic physical meaning of an electrical circuit.