Industrial Electrical Maintenance Course

Lesson 1 • Personal Protective Equipment for Electricians

Identifies PPE categories, selection criteria, and proper donning procedures for electrical work. Correct PPE use is a prerequisite for every lab and field activity in this course.

Lesson 2 • Electrical Safety Regulations and Standards

Introduces industry safety standards, employer obligations, and documentation requirements. Students connect regulatory expectations to daily maintenance decisions.

Lesson 3 • Emergency Response for Electrical Incidents

Prepares technicians to respond to shock, arc flash burns, and electrical fires. Rapid, correct response limits injury severity and is reinforced throughout the course.

Lesson 4 • Electrical Hazards and Risk Identification

Covers shock, arc flash, and fire hazards present in industrial environments. Builds the hazard-recognition foundation required for all subsequent hands-on tasks.

Lesson 1 • Atomic Structure and Electron Flow

Explains how atomic structure drives electron movement and establishes the concept of current. This foundational model underpins every circuit analysis technique taught later.

Lesson 2 • Alternating Current Fundamentals

Introduces AC waveforms, frequency, phase, and RMS values used in industrial power systems. AC theory is essential for understanding motors, transformers, and power distribution covered later.

Lesson 3 • Ohm's Law and Power Calculations

Applies Ohm's Law and Watt's Law to calculate voltage, current, resistance, and power. These calculations are used in every diagnostic and sizing task throughout the course.

Lesson 4 • Inductance, Capacitance, and Impedance

Covers reactive components and their effect on AC circuit behaviour, including impedance and power factor. This knowledge supports motor and power quality diagnostics in later chapters.

Lesson 1 • Digital Multimeter Operation

Covers meter functions, range selection, lead placement, and safe measurement techniques. The multimeter is the primary diagnostic tool referenced in all subsequent troubleshooting chapters.

Lesson 2 • Insulation Resistance Testing

Explains megohmmeter operation, test voltage selection, and interpretation of insulation resistance (IR) values. Insulation testing is a primary predictive maintenance tool for motors and cables.

Lesson 3 • Power Quality Analysers and Thermal Imaging

Covers power quality meter setup and infrared camera use for detecting electrical faults. These tools extend diagnostic capability beyond basic metering for predictive maintenance programmes.

Lesson 4 • Clamp Meter and Current Measurement

Teaches non-contact current measurement for single and three-phase circuits using clamp meters. Accurate current readings are critical for motor load analysis and fault detection.

Lesson 1 • Conductor Ampacity and Sizing

Applies ampacity tables and correction factors to size conductors for load, temperature, and conduit fill. Proper sizing is foundational to every panel, motor, and control circuit installation.

Lesson 2 • Cable Tray and Wireways

Explains cable tray types, fill calculations, and wireway applications in industrial environments. These systems are common in large facilities and require specific installation and maintenance practices.

Lesson 3 • Conductor Types and Insulation Ratings

Identifies wire gauges, stranding, and insulation temperature and voltage ratings for industrial use. Correct conductor selection prevents overheating and insulation failure in maintained systems.

Lesson 4 • Terminations, Splices, and Connections

Teaches proper stripping, crimping, lugging, and torque procedures for reliable electrical connections. Poor terminations are a leading cause of failures in industrial electrical systems.

Lesson 1 • Switchgear and Switchboards

Identifies switchgear and switchboard components, bus ratings, and maintenance inspection points. These assemblies are the primary distribution nodes maintained by industrial electricians.

Lesson 2 • Grounding and Bonding Systems

Explains system grounding, equipment grounding, and bonding requirements for industrial power systems. Proper grounding ensures personnel safety and equipment protection throughout the facility.

Lesson 3 • Utility Service and Metering

Covers utility service entrance components, metering equipment, and demand billing concepts. Understanding the service point establishes context for all downstream distribution maintenance.

Lesson 4 • Transformers: Types and Operation

Explains transformer construction, turns ratio, voltage transformation, and common industrial configurations. Transformer knowledge is required for maintenance tasks in every subsequent power chapter.

Lesson 1 • Motor Starting Methods

Compares across-the-line, reduced-voltage, and soft-start methods for controlling inrush and mechanical stress. Starting method selection affects motor life and power system stability.

Lesson 2 • Motor Overload and Protection Devices

Covers thermal and electronic overload relays, fuse sizing, and motor branch circuit protection requirements. Correct protection prevents motor burnout and nuisance tripping in production environments.

Lesson 3 • Three-Phase Induction Motor Principles

Explains rotating magnetic field creation, slip, torque production, and motor nameplate data. This theory directly supports motor selection, sizing, and fault diagnosis in later sections.

Lesson 4 • Motor Control Circuit Wiring

Teaches ladder logic diagrams, control transformer wiring, and contactor/relay circuit construction. Wiring control circuits accurately is the core hands-on skill for motor maintenance technicians.

Lesson 1 • VFD Operating Principles

Explains rectifier, DC bus, and inverter stages that convert fixed AC to variable frequency output. Understanding internal stages is essential for interpreting drive faults and waveforms.

Lesson 2 • VFD Installation and Wiring

Covers input/output wiring, grounding, shielded cable requirements, and bypass circuit installation. Correct installation prevents EMI interference and premature drive failure.

Lesson 3 • Drive Parameter Programming

Teaches essential parameter groups: motor data, acceleration/deceleration, speed references, and protection settings. Proper programming optimises motor performance and protects both drive and motor.

Lesson 4 • VFD Fault Diagnosis and Troubleshooting

Interprets drive fault codes, DC bus voltage, and output current readings to isolate failures. Systematic fault diagnosis minimises downtime and prevents repeat failures.

Lesson 1 • Reading and Interpreting Electrical Drawings

Develops ability to read schematics, wiring diagrams, and one-line drawings to trace circuit faults. Drawing literacy accelerates diagnosis and is required for every advanced troubleshooting task.

Lesson 2 • Systematic Troubleshooting Methodology

Introduces a repeatable fault-isolation process: define, locate, identify cause, correct, and verify. A structured method reduces diagnostic time and prevents misdiagnosis across all equipment types.

Lesson 3 • Root Cause Analysis and Maintenance Records

Teaches root cause analysis tools and maintenance record systems to prevent recurring failures. Accurate records support reliability improvement and regulatory compliance documentation.

Lesson 4 • Infrared and Ultrasonic Inspection

Applies thermal imaging and ultrasonic detection to identify loose connections, overloaded circuits, and partial discharge. These non-contact methods enable inspection without de-energising equipment.