Design of Illumination, Earthing, and Lightning Protection Course

Lesson 1 • Regulatory and Standards Framework

Surveys international electrical standards bodies and their functional roles. Prepares students to apply code-compliant design practices throughout the course.

Lesson 2 • Basic Electrical Quantities and Units

Covers voltage, electric current, electrical resistance, and power with SI units. Establishes the quantitative language used throughout all subsequent design work.

Lesson 3 • Electrical Safety Principles

Defines shock hazards, arc flash risks, and safe working distances. Connects safety awareness to design decisions made in later chapters.

Lesson 1 • Illumination Standards by Space Type

Presents recommended illuminance levels for offices, industrial, healthcare, and outdoor spaces. Provides the target values used in all design calculations.

Lesson 2 • Visual Comfort and Glare Control

Addresses unified glare rating, veiling reflections, and disability glare. Connects occupant comfort requirements to luminaire placement and shielding choices.

Lesson 3 • Luminaire Types and Photometric Data

Examines luminaire classifications, beam distributions, and IES photometric files. Students learn to read and apply manufacturer data in design calculations.

Lesson 4 • Light Sources and Technologies

Compares incandescent, fluorescent, HID, and LED sources by efficacy and spectrum. Informs lamp selection decisions in subsequent design chapters.

Lesson 1 • Lighting Design Software Tools

Introduces DIALux, AGi32, and similar platforms for simulation and rendering. Students validate manual calculations and produce professional design reports.

Lesson 2 • Point-by-Point Calculation Technique

Uses the inverse-square law and cosine correction to find illuminance at specific points. Enables precise analysis of non-uniform lighting conditions.

Lesson 3 • Roadway and Outdoor Lighting Calculations

Covers luminance and illuminance methods for roadway, parking, and sports lighting. Extends calculation skills to exterior environments with unique geometry.

Lesson 4 • Lumen Method for Interior Spaces

Applies the zonal cavity method to calculate average illuminance and fixture count. Directly enables students to size interior lighting systems.

Lesson 1 • Electrode Types and Installation

Compares driven rods, buried plates, ring electrodes, and foundation electrodes. Students select and specify electrode configurations for target electrical resistance values.

Lesson 2 • Substation and Industrial Earthing Design

Addresses grid design for substations including touch, step, and mesh voltage limits. Applies IEEE 80 methodology concepts to high-fault-current environments.

Lesson 3 • Earthing Fundamentals and Objectives

Defines earthing purposes: fault current return, equipotential bonding, and EMI control. Establishes the safety rationale that drives all earthing design decisions.

Lesson 4 • Earthing System Electrical Resistance Calculations

Applies analytical formulas and IEEE methods to calculate electrode electrical resistance. Enables students to verify that designs meet maximum electrical resistance thresholds.

Lesson 5 • Soil Resistivity and Measurement

Covers Wenner four-pin and Schlumberger methods for measuring soil resistivity. Accurate soil data is the critical input for electrode sizing calculations.

Lesson 1 • Bonding Principles and Requirements

Explains why bonding prevents shock from potential differences during fault conditions. Connects bonding theory to earthing system design from the previous chapter.

Lesson 2 • Bonding conductor sizing

Applies adiabatic and minimum cross-section rules to size bonding conductors. Ensures conductors survive fault currents without thermal damage.

Lesson 3 • Structural and Extraneous Conductive Parts

Identifies pipework, HVAC ducts, structural steel, and other extraneous parts requiring bonding. Provides a systematic survey method for complex buildings.

Lesson 1 • LPS inspection and maintenance

Defines inspection intervals, visual checks, and electrical continuity testing for LPS components. Ensures long-term system integrity after installation.

Lesson 2 • Separation distance and isolation

Calculates required separation distances to prevent dangerous sparking to internal metalwork. Addresses cases where separation cannot be maintained.

Lesson 3 • Down conductor system design

Covers routing, spacing, and material requirements for down conductors. Proper design minimises side-flash risk and distributes lightning current safely.

Lesson 4 • Earth termination for lightning protection

Designs earth termination networks specific to lightning protection, including ring and radial electrodes. Integrates LPS earthing with the power system earthing grid.

Lesson 5 • Lightning physics and risk assessment

Explains lightning formation, stroke parameters, and ground flash density data. Risk assessment quantifies the need for protection before any design begins.

Lesson 1 • SPD installation and testing

Specifies lead length limits, connection methods, and backup protection for SPD installations. Covers functional testing and replacement criteria after surge events.

Lesson 2 • Type 1, 2, and 3 devices

Applies the LPZ concept to define protection boundaries and assign SPD classes. Coordinates Type one, Type two, and Type three devices for cascaded protection.

Lesson 3 • Transient overvoltage mechanisms

Explains direct strike, inductive coupling, and resistive coupling as overvoltage sources. Understanding these mechanisms guides SPD placement and coordination.

Lesson 4 • Shielding and cable routing

Covers magnetic shielding of buildings, shielded cables, and routing to minimise induced voltages. Reduces the surge burden on SPDs through passive mitigation.

Lesson 1 • Coordinating the three subsystems

Addresses interface points between lighting, earthing, and LPS to prevent conflicts. Establishes a coordination workflow that ensures all subsystems function together.

Lesson 2 • Electrical commissioning and handover

Covers functional testing, measurement verification, and as-built documentation for all subsystems. Confirms that installed systems meet design specifications before handover.

Lesson 3 • Design documentation and drawings

Covers single-line diagrams, earthing layout drawings, and LPS installation drawings. Proper documentation is required for contractor guidance and regulatory submission.

Lesson 4 • Construction phase oversight

Defines the designer's role during installation, including site inspections and RFI responses. Ensures design intent is preserved through the construction process.