The Foundations of Electricity & Methods of Protection
Course Overview:
This course provides a fundamental understanding of electricity and the key methods used to ensure electrical safety and protection. Participants will explore the essential principles of electrical theory, types of electrical hazards, and the protective devices and systems designed to safeguard people, equipment, and installations. The course is ideal for those who need to strengthen their basic electrical knowledge while gaining practical insights into protective technologies and best practices.
Course Objectives:
By the end of this course, participants will be able to:
- Understand the basic principles of electricity, including voltage, current, and resistance
- Apply Ohm’s and Kirchhoff’s Laws in basic circuit analysis
- Recognize common electrical hazards and their causes
- Identify key methods of protection against electric shock, fire, and equipment damage
- Understand the operation and selection of protective devices like fuses, circuit breakers, and RCDs
- Interpret basic electrical diagrams and symbols
- Promote electrical safety through appropriate grounding, bonding, and isolation
Who Should Attend:
- Maintenance and operations personnel
- New and aspiring electrical technicians
- Non-electrical engineers working in multidisciplinary teams
- Safety officers and HSE staff
- Facility supervisors and general technicians
- Anyone seeking foundational electrical knowledge
Course Outline:
Basic Principles of Electricity
- Atomic structure and flow of electrons
- Voltage, current, resistance, and power
- AC vs. DC current: characteristics and uses
- Introduction to electrical circuits: series and parallel
Ohm’s Law and Circuit Behavior
- Applying Ohm’s Law to solve electrical problems
- Calculating resistance, current, and voltage drops
- Using Kirchhoff’s Voltage and Current Laws
- Understanding power consumption and energy efficiency
Electrical Hazards and Risks
- Effects of electric shock and arc flash
- Common causes of electrical fires
- Overloads, short circuits, and ground faults
- Hazard identification and mitigation strategies
Protective Devices and Systems
- Fuses, circuit breakers, and overload relays
- Residual current devices (RCDs) and ground fault protection
- Surge protection and voltage limiting devices
- Coordination and selectivity in protection systems
Grounding and Bonding
- Purpose of grounding and bonding
- Types of earthing systems: TT, TN, and IT
- Protective earthing vs. functional earthing
- Earth fault loop impedance and testing practices
Electrical Isolation and Safe Work Practices
- Lockout-tagout (LOTO) procedures
- Isolation switches and disconnection means
- Use of personal protective equipment (PPE)
- Safety signage and equipment labeling
Introduction to Wiring and Diagrams
- Reading basic single-line and schematic diagrams
- Common electrical symbols and notations
- Cable sizing, color coding, and routing basics
- Electrical enclosures and IP ratings