Basic Electrical Course

Lesson 1 • Electrical Safety Fundamentals

Identifies hazards of shock, arc flash, and fire caused by electrical faults. Establishes safety habits that apply throughout the entire course.

Lesson 2 • Electrical Power and Energy

Covers power formulas (P = VI) and energy consumption over time. Connects theoretical quantities to real-world cost and equipment ratings.

Lesson 3 • Ohm's Law and Its Applications

Introduces the mathematical relationship V = IR and applies it to simple calculations. Learners gain the primary tool for predicting circuit behaviour.

Lesson 4 • Atomic Structure and Electron Flow

Explains how atomic structure drives electron movement and defines electrical current. Anchors all later circuit concepts in physical reality.

Lesson 1 • Kirchhoff's Voltage and Current Laws

Introduces KVL and KCL as universal tools for any circuit topology. Learners verify calculations and solve circuits that cannot be simplified by inspection.

Lesson 2 • Parallel Circuits

Analyses circuits with multiple current paths sharing the same voltage. Learners apply reciprocal resistance formulas and current divider rules.

Lesson 3 • Series-Parallel Combination Circuits

Breaks down complex networks into series and parallel sub-sections for systematic analysis. Builds problem-solving strategy for real-world wiring configurations.

Lesson 4 • Series Circuits

Examines circuits where components share a single current path. Learners calculate total resistance, voltage drops, and current throughout a series network.

Lesson 1 • Fuses, Breakers, and Overcurrent Protection

Explains how overcurrent devices protect conductors and equipment from damage. Learners size and select protection devices based on load requirements.

Lesson 2 • Inductors and Inductance

Describes how inductors oppose changes in current and store energy in magnetic fields. Lays groundwork for understanding transformers and AC reactance.

Lesson 3 • Capacitors and Capacitance

Explains how capacitors store charge, their construction types, and capacitance calculations. Prepares learners for AC circuit and filter applications.

Lesson 4 • Switches, Relays, and Contactors

Identifies manual and automatic switching devices and their schematic symbols. Learners select appropriate switching devices for load control applications.

Lesson 1 • Ampacity and Conductor Sizing

Applies ampacity tables and derating factors for temperature, conduit fill, and continuous loads. Learners size conductors correctly for given load conditions.

Lesson 2 • Grounding and Bonding Fundamentals

Distinguishes earthing from bonding and explains their roles in fault protection and noise reduction. Learners identify required earthing conductors and bonding connections.

Lesson 3 • Wiring Methods and Raceways

Surveys conduit types, cable assemblies, and open wiring methods and their permitted applications. Learners select appropriate wiring methods for different environments.

Lesson 4 • Voltage Drop Calculations

Calculates voltage drop using conductor resistance and load current to ensure adequate voltage at the load. Learners upsize conductors when calculated drop exceeds acceptable limits.

Lesson 1 • Impedance and Series AC Circuits

Combines resistance and reactance into impedance using phasor addition and the impedance triangle. Learners solve RLC series circuits for current and voltage drops.

Lesson 2 • Capacitive Reactance in AC Circuits

Calculates capacitive reactance (XC) and its effect on current phase in AC circuits. Prepares learners for filter design and power factor correction concepts.

Lesson 3 • AC Waveform Characteristics

Defines sinusoidal waveforms and their key parameters: amplitude, frequency, period, and phase. Establishes the language used throughout AC circuit analysis.

Lesson 4 • Power in AC Circuits

Distinguishes true power, reactive power, and apparent power using the power triangle. Learners calculate power factor and understand its impact on system efficiency.

Lesson 1 • Transformers: Principles and Types

Explains transformer operation via mutual induction and covers step-up, step-down, and isolation types. Learners calculate turns ratios and secondary voltage and current values.

Lesson 2 • Three-Phase Power Systems

Introduces three-phase wye and delta configurations and their voltage and current relationships. Learners identify system type and calculate line and phase quantities.

Lesson 3 • Power Generation and Transmission Overview

Summarises how generators produce AC power and how transmission lines deliver it at high voltage. Provides system-level context for distribution equipment studied later.

Lesson 4 • Load Calculations for Distribution Systems

Applies demand factors and load calculation methods to size service and feeder conductors. Learners determine total connected and demand loads for residential and commercial panels.

Lesson 1 • Variable Frequency Drives

Explains VFD operation, parameter settings, and energy-saving benefits for variable-torque loads. Learners configure basic VFD parameters and interpret drive fault codes.

Lesson 2 • Motor Control Circuits and Diagrams

Reads and draws ladder logic diagrams for motor start-stop, jog, and reversing circuits. Learners trace control circuit operation from schematic to physical wiring.

Lesson 3 • AC Motor Types and Operating Principles

Compares induction, synchronous, and single-phase motor types and explains rotating magnetic field theory. Learners match motor type to application requirements.

Lesson 4 • Motor Protection Devices

Identifies overload relays, thermal protectors, and phase-loss monitors used to protect motors. Learners size overload protection based on motor full-load current ratings.

Lesson 1 • Motor and Control Circuit Diagnostics

Applies troubleshooting methods to motor windings, contactors, overloads, and control circuits. Learners restore motor systems to operation using logical diagnostic steps.

Lesson 2 • Systematic Troubleshooting Methodology

Introduces a structured fault-finding process: observe, analyse, test, repair, and verify. Provides a repeatable framework applicable to any electrical system.

Lesson 3 • Troubleshooting Common Circuit Faults

Diagnoses open circuits, short circuits, and high-resistance connections using voltage and resistance tests. Learners apply test results to pinpoint fault location efficiently.

Lesson 4 • Test Instruments and Their Use

Covers multimeters, clamp meters, megohm meters, and oscilloscopes for electrical diagnostics. Learners select the correct instrument and interpret readings accurately.