Electrician Diploma Course

Lesson 1 • Atomic Structure and Electric Charge

Explains how atomic structure determines electrical behaviour of materials. Establishes the physical basis for understanding conductors, insulators, and semiconductors.

Lesson 2 • Ohm's Law and Power Calculations

Applies Ohm's Law to calculate unknown circuit values from known quantities. Introduces power and energy formulas essential for load analysis.

Lesson 3 • Voltage, Current, and Resistance

Defines the three fundamental electrical quantities and their units of measurement. Connects these quantities as the basis for all circuit analysis.

Lesson 1 • Network Theorems for DC Circuits

Introduces Thevenin's and Norton's theorems to simplify complex networks. Enables efficient analysis of circuits with multiple sources.

Lesson 2 • Series-Parallel Combination Circuits

Solves complex circuits containing both series and parallel sections. Develops systematic reduction techniques for real-world circuit configurations.

Lesson 3 • Parallel Circuit Characteristics

Analyses circuits where components share the same voltage across multiple branches. Introduces reciprocal resistance formulas and branch current calculations.

Lesson 4 • Series Circuit Characteristics

Examines how components connected in series share current and divide voltage. Builds on Ohm's Law to solve multi-component series circuits.

Lesson 1 • Three-Phase AC Systems

Explains the generation and advantages of three-phase power distribution. Analyses balanced wye and delta configurations for voltage and current relationships.

Lesson 2 • Sinusoidal Waveforms and AC Quantities

Defines AC waveform parameters including frequency, period, amplitude, and phase. Establishes the mathematical language used throughout AC circuit analysis.

Lesson 3 • Capacitive and Inductive Reactance

Calculates reactance for capacitors and inductors at various frequencies. Connects reactance to impedance and the frequency-dependent behaviour of AC circuits.

Lesson 4 • AC Power: Real, Reactive, and Apparent

Distinguishes between true power, reactive power, and apparent power in AC systems. Introduces power factor and its impact on system efficiency.

Lesson 1 • Resistors and Capacitors

Covers resistor types, colour codes, tolerances, and capacitor construction and ratings. Connects component characteristics to their roles in practical circuits.

Lesson 2 • Fuses, Breakers, and Overcurrent Protection

Explains how overcurrent devices protect conductors and equipment from damage. Establishes sizing and selection principles used in wiring installations.

Lesson 3 • Inductors and Transformers

Explains electromagnetic induction as the operating principle for inductors and transformers. Prepares students for AC circuit analysis in subsequent chapters.

Lesson 4 • Switches, Relays, and Contactors

Describes control devices that open and close circuits manually or automatically. Links switching devices to motor control and protection applications.

Lesson 1 • Boxes, Fittings, and Device Installation

Covers outlet box selection, fill calculations, and proper device mounting. Correct box installation ensures safe terminations and mechanical integrity.

Lesson 2 • Cable Wiring Methods

Describes nonmetallic sheathed, armoured, and service entrance cable types and their applications. Correct cable selection and installation prevent insulation damage and code violations.

Lesson 3 • Earthing and Bonding Systems

Explains the purpose and installation of equipment earthing and system bonding. Proper earthing limits shock hazard and ensures overcurrent device operation.

Lesson 4 • Conductors: Types, Sizes, and Ratings

Covers wire gauge systems, insulation types, and ampacity ratings for copper and aluminium conductors. Correct conductor selection prevents overheating and fire hazards.

Lesson 1 • Distribution Boards and Load Centres

Covers distribution board construction, bus ratings, and breaker installation procedures. Correct distribution board setup ensures safe distribution of final circuit power.

Lesson 2 • Service Entrance Components and Layout

Identifies service drop, meter base, and service entrance conductor requirements. Understanding service layout is essential for installation and inspection tasks.

Lesson 3 • Load Calculations for Electrical Services

Performs standard load calculations to determine service size for dwellings and commercial spaces. Accurate load calculations prevent undersized services and equipment failures.

Lesson 4 • Final Circuit Design and Layout

Applies conductor sizing and overcurrent protection rules to design final circuits. Proper final circuit design prevents overloads and ensures reliable operation.

Lesson 1 • Motor Protection Devices

Selects and sizes overload relays, fuses, and breakers to protect motors from damage. Correct protection prevents motor burnout and reduces downtime.

Lesson 2 • AC Motor Principles and Types

Explains rotating magnetic field theory and the operating principles of induction motors. Motor theory from this section supports all subsequent motor control topics.

Lesson 3 • Motor Control Circuits and Diagrams

Reads and draws ladder diagrams for motor control circuits including start-stop and reversing. Control circuit skills are essential for industrial troubleshooting and installation.

Lesson 4 • DC Motor Types and Operation

Describes series, shunt, and compound DC motor characteristics and speed-torque curves. DC motor knowledge supports variable speed drive and control circuit applications.

Lesson 1 • Systematic Troubleshooting Methodology

Introduces a structured fault-finding process applicable to any electrical system. A consistent methodology reduces diagnostic time and prevents misdiagnosis.

Lesson 2 • Preventive Maintenance Programmes

Establishes scheduled inspection and maintenance routines for electrical systems and equipment. Preventive maintenance reduces unplanned outages and extends equipment service life.

Lesson 3 • Troubleshooting Wiring and Circuit Faults

Diagnoses open circuits, short circuits, and high-resistance connections in wiring systems. Wiring faults are amongst the most common causes of electrical failures.

Lesson 4 • Test Instruments for Diagnostics

Covers advanced use of multimeters, clamp meters, megohmmeters, and oscilloscopes. Selecting the correct instrument ensures accurate diagnosis without equipment damage.