Building Electrical Systems Course

Lesson 1 • Voltage, Current, and Resistance

Defines the three fundamental electrical quantities and their relationships. Provides the conceptual base for all subsequent circuit analysis in the course.

Lesson 2 • Alternating Current Fundamentals

Introduces AC waveforms, frequency, and phase relationships essential for building power systems. Bridges DC theory to real-world AC distribution.

Lesson 3 • Electrical Safety Principles

Establishes shock hazard thresholds, earthing concepts, and lockout procedures. Safety awareness is reinforced in every subsequent hands-on chapter.

Lesson 4 • Power and Energy in Circuits

Covers electrical power formulas and energy consumption calculations. Connects theory to load estimation tasks performed throughout the course.

Lesson 1 • Purpose and Structure of Electrical Codes

Explains how electrical codes are organised and why they exist. Establishes the regulatory framework students reference throughout the course.

Lesson 2 • Earthing and Bonding Code Requirements

Specifies code-mandated earthing electrode systems and bonding paths. Reinforces safety principles from Chapter 1 with enforceable regulatory detail.

Lesson 3 • Wiring Methods and Materials Requirements

Covers code-specified conductor types, insulation ratings, and approved wiring methods. Prepares students to select compliant materials in later installation chapters.

Lesson 4 • Overcurrent Protection Requirements

Details code rules for fuses, breakers, and conductor ampacity coordination. Directly supports panel design and circuit protection work in later chapters.

Lesson 1 • Conductor Materials and Sizing

Covers copper and aluminium conductor properties, AWG sizing, and ampacity. Provides the selection foundation for all wiring installations in the course.

Lesson 2 • Cable Types and Applications

Identifies common cable assemblies and their approved installation environments. Students match cable types to occupancy and location requirements.

Lesson 3 • Splicing, Terminations, and Connectors

Covers proper methods for joining and terminating conductors at devices and panels. Correct termination technique prevents failures addressed in troubleshooting chapters.

Lesson 4 • Conduit Bending and Installation

Teaches manual and mechanical bending techniques for accurate conduit runs. Hands-on practice reinforces measurement, layout, and fitting skills.

Lesson 1 • Appliance and Small Motor Circuits

Covers dedicated circuits for kitchen appliances, HVAC units, and small motors. Students size conductors and overcurrent devices for specific loads.

Lesson 2 • Branch Circuit Design Principles

Covers load calculation methods and circuit layout planning for branch circuits. Establishes design logic applied in all subsequent wiring installation sections.

Lesson 3 • Receptacle and Device Wiring

Demonstrates correct wiring of standard, GFCI, and AFCI receptacles. Students apply code location rules and device installation techniques.

Lesson 4 • Lighting Circuit Installation

Addresses fixture types, mounting methods, and circuit wiring for interior lighting. Connects branch circuit design to complete lighting system installation.

Lesson 1 • Panelboard Layout and Installation

Demonstrates panelboard selection, mounting, and circuit directory organization. Students install breakers and terminate conductors to manufacturer and code standards.

Lesson 2 • Earthing Electrode System Installation

Covers installation of earth rods, water pipe electrodes, and bonding conductors. Completes the earthing system knowledge introduced in the code chapter.

Lesson 3 • Feeder Design and Installation

Covers feeder conductor sizing, conduit selection, and routing from service to subpanels. Students design feeders that meet ampacity and voltage drop requirements.

Lesson 4 • Electrical Service Entrance Components

Identifies service drop, meter base, and main disconnect components and their functions. Provides the system-level context for all distribution work in this chapter.

Lesson 1 • Electric Motor Types and Operation

Explains single-phase and three-phase motor types, nameplate data, and operating principles. Motor theory underpins all circuit sizing and control work in this chapter.

Lesson 2 • Variable Frequency Drives

Introduces VFD operating principles, installation requirements, and parameter setup. Covers harmonic effects and input/output wiring considerations for building systems.

Lesson 3 • Motor Control Circuit Wiring

Teaches two-wire and three-wire control circuits, start-stop stations, and interlocking. Students read and wire ladder diagrams for common control applications.

Lesson 4 • Magnetic Starters and Contactors

Covers contactor and starter construction, coil ratings, and auxiliary contact use. Wiring starters correctly is prerequisite to control circuit work in the next section.

Lesson 1 • Transformer Sizing and Protection

Applies kVA load calculations and code-based overcurrent protection rules to transformer selection. Accurate sizing prevents overloading and ensures code compliance.

Lesson 2 • Transformer Types and Configurations

Covers dry-type, liquid-filled, and autotransformer designs and their building applications. Students match transformer type to occupancy, load, and installation environment.

Lesson 3 • Power Quality and Harmonics

Addresses voltage sags, harmonics, and transients that affect building electrical systems. Students identify power quality problems and select appropriate mitigation equipment.

Lesson 4 • Distribution System Configurations

Examines radial, loop, and selective distribution topologies used in commercial buildings. Students evaluate system reliability and fault isolation for each configuration.

Lesson 1 • Insulation and Earth Testing

Covers megohmmeter testing of conductor insulation and earth electrode resistance measurement. Identifies insulation degradation before it causes failures or shock hazards.

Lesson 2 • Continuity and Voltage Testing

Teaches systematic voltage presence checks and continuity verification procedures. These foundational tests are applied in every fault-finding scenario in the chapter.

Lesson 3 • Fault Isolation and Diagnosis

Applies structured half-split and symptom-based methods to locate shorts, opens, and earth faults. Students work through realistic fault scenarios on simulated building circuits.

Lesson 4 • Preventive Maintenance Procedures

Establishes inspection schedules, thermal imaging use, and connection retorquing practices. Preventive maintenance reduces unplanned outages and extends equipment service life.