Electrical Installation Design Course

Lesson 1 • Electrical System Architectures

Introduces low-voltage, medium-voltage, and distribution system layouts. Connects system topology choices to load requirements and safety constraints.

Lesson 2 • Core Electrical Theory Review

Covers voltage, current, resistance, and power relationships essential to design decisions. Establishes the quantitative foundation used throughout all subsequent chapters.

Lesson 3 • Regulatory and Standards Framework

Explains how wiring regulations, safety standards, and inspection codes govern design. Students learn to navigate regulatory documents and apply requirements to design tasks.

Lesson 4 • Design Process and Documentation

Maps the end-to-end design workflow from client brief to as-built drawings. Establishes professional documentation habits required in all practical exercises.

Lesson 1 • Voltage Drop Assessment

Calculates permissible voltage drop across circuits to ensure equipment operates within tolerance. Links conductor cross-section selection to end-use performance requirements.

Lesson 2 • Environmental and Hazardous Area Wiring

Addresses wiring in wet, corrosive, high-temperature, and explosive-atmosphere zones. Ensures students can specify appropriate protection methods for non-standard environments.

Lesson 3 • Wiring Installation Methods

Covers conduit, trunking, cable tray, and direct-burial methods with their applicable environments. Prepares students to select installation methods that satisfy mechanical and fire protection needs.

Lesson 4 • Cable Construction and Types

Examines conductor materials, insulation types, and sheathing options for various environments. Connects material properties to performance and regulatory compliance requirements.

Lesson 1 • Residual Current Device Application

Explains RCD operating principles, sensitivity levels, and mandatory application zones. Connects shock protection requirements to device selection and circuit arrangement.

Lesson 2 • Overcurrent Protection Devices

Compares fuses, miniature circuit breakers, and molded-case circuit breakers by characteristic curves. Students select devices that protect cables while allowing normal load operation.

Lesson 3 • Discrimination and Selectivity

Applies time-current grading and energy-based discrimination to achieve selective fault clearance. Students verify that upstream devices do not trip unnecessarily during downstream faults.

Lesson 4 • Final Circuit Design Principles

Defines circuit grouping strategies, socket outlet circuits, and lighting circuit layouts. Establishes the circuit-level design logic that underpins all protective device selections.

Lesson 1 • Protective Conductor Sizing

Applies adiabatic and tabulated methods to size protective conductors for fault energy withstand. Ensures conductors survive fault currents long enough for protective devices to operate.

Lesson 2 • Main and Supplementary Bonding

Specifies main equipotential bonding to extraneous conductive parts and supplementary bonding in special locations. Reduces touch voltage risk in bathrooms, kitchens, and outdoor areas.

Lesson 3 • Touch and Step Voltage Verification

Calculates touch and step voltages under fault conditions and compares them to safety thresholds. Confirms that the earthing design achieves acceptable shock risk levels.

Lesson 4 • Earthing System Fundamentals

Distinguishes TN-S, TN-C-S, TT, and IT earthing arrangements and their design implications. Establishes the earthing topology that governs all subsequent bonding and protection decisions.

Lesson 1 • Busbar Trunking Systems

Sizes busbar trunking for rising mains and horizontal distribution in commercial and industrial buildings. Addresses tap-off unit placement, voltage drop, and short-circuit rating verification.

Lesson 2 • Metering and Monitoring Integration

Specifies current transformers, energy meters, and power quality monitors within switchgear assemblies. Supports energy management and billing requirements introduced in later chapters.

Lesson 3 • Switchgear Types and Ratings

Compares air-insulated, gas-insulated, and vacuum switchgear by voltage class and application. Connects equipment ratings to the fault levels and load currents calculated in earlier chapters.

Lesson 4 • Distribution Board Design

Covers board layout, busbar sizing, incoming device selection, and outgoing circuit arrangement. Produces a complete distribution board schedule as a core design deliverable.

Lesson 1 • Illuminance Calculation Methods

Applies the lumen method and point-by-point calculation to determine luminaire quantity and placement. Connects photometric data to circuit loading and energy performance targets.

Lesson 2 • Lighting Control Systems

Specifies occupancy sensors, daylight harvesting, and scene control strategies for energy efficiency. Prepares students to integrate control wiring into the overall installation design.

Lesson 3 • General Power Circuit Layout

Plans socket outlet, fixed equipment, and small power circuit distribution across floor plans. Applies load density and circuit length limits to produce balanced, code-compliant layouts.

Lesson 4 • Emergency Lighting Design

Designs escape route and standby emergency lighting systems to meet safety duration requirements. Integrates emergency lighting into the main circuit design and testing regime.

Lesson 1 • Harmonic Measurement and Limits

Applies power quality standards to measure total harmonic distortion and compare against emission limits. Provides the measurement methodology needed to justify mitigation investment.

Lesson 2 • Harmonic Sources and Effects

Identifies variable speed drives, UPS units, and switched-mode supplies as harmonic sources. Explains voltage distortion, overheating, and metering errors caused by harmonic currents.

Lesson 3 • Capacitor Bank Design

Sizes fixed and automatic capacitor banks to achieve target power factor at the point of supply. Addresses switching transients, resonance risk, and protection requirements for capacitor banks.

Lesson 4 • Reactive Power and Power Factor Fundamentals

Explains active, reactive, and apparent power relationships and their effect on system efficiency. Establishes the analytical basis for all correction and mitigation work in this chapter.

Lesson 1 • As-Built Documentation and Handover

Specifies requirements for as-built drawings, operation and maintenance manuals, and training deliverables. Completes the design lifecycle by ensuring end users can safely operate and maintain the installation.

Lesson 2 • Load Flow and System Analysis

Performs load flow analysis to verify voltage profiles and equipment loading across the full system. Identifies overloaded branches and under-voltage nodes before construction begins.

Lesson 3 • Coordinated Design Documentation

Assembles single-line diagrams, cable schedules, equipment data sheets, and protection settings into one package. Demonstrates how individual design outputs combine into a coherent, contractor-ready set.

Lesson 4 • Commissioning and Testing Planning

Develops inspection, testing, and commissioning plans aligned with regulatory and manufacturer requirements. Ensures the design team specifies measurable acceptance criteria for every system.