Unit 3496: Comprehensive Electrical Fundamentals

1. Basics of Electricity

1.1 Fundamental Concepts

• Voltage (V): Definition and units
• Current (I): Definition and units
• Resistance (R): Definition and units

1.2 Ohm's Law

• Relationship between voltage, current, and resistance
• Formula: V = IR

1.3 Power Calculations

• Power (P) formula: P = VI
• Understanding watts, kilowatts
• Practical examples and calculations

2. Electrical Safety Practices

2.1 Safety Precautions

• Importance of safety in electrical work
• Risk identification

2.2 Personal Protective Equipment (PPE)

• Types of PPE: gloves, goggles, insulating mats
• Proper use and maintenance

2.3 Grounding and Earthing

• Purpose and methods
• Ground fault protection

2.4 Safe Handling of Electrical Equipment

• Lockout/tagout procedures
• Inspection and maintenance

3. Electrical Components and Devices

3.1 Switches

• Types: toggle, push-button, rotary
• Applications

3.2 Outlets and Receptacles

• Types and ratings
• Installation basics

3.3 Circuit Breakers and Fuses

• Functions and differences
• Selection criteria

3.4 Wiring Materials

• Types of wires and cables
• Insulation and ratings

4. Types of Wiring Systems

4.1 Conduit Wiring

• Description and components
• Advantages and typical uses

4.2 Surface Wiring

• Characteristics
• Applications and limitations

4.3 Concealed Wiring

• Installation methods
• Benefits and challenges

5. Electrical Circuit Design

5.1 Series Circuits

• Definition and properties
• Calculations of voltage, current, resistance

5.2 Parallel Circuits

• Definition and properties
• Calculations and comparison with series circuits

5.3 Circuit Diagrams

• Symbols and conventions
• Reading and drawing basic diagrams

5.4 Basic Circuit Calculations

• Applying Ohm’s Law in design
• Power and energy considerations

6. Introduction to Electrical Codes and Standards

6.1 Overview of Codes and Standards

• Purpose and importance
• Examples: NEC, IEC

6.2 Compliance Requirements

• Inspection and certification
• Legal and safety implications

7. Basic Tools and Equipment for Electrical Work

7.1 Common Tools

• Wire strippers, pliers, screwdrivers
• Voltage testers and multimeters

7.2 Tool Usage and Maintenance

• Proper handling
• Safety tips

8. Introduction to Residential Electrical Installations

8.1 Lighting Systems

• Types of lighting fixtures
• Wiring considerations

8.2 Receptacles and Switches

• Placement and wiring
• Types commonly used in residences

8.3 Panel Boards

• Function and components
• Basic installation considerations

8.4 Common Practices and Regulations

• Residential wiring standards
• Safety and inspection protocols