Basic Electrical Principles
Voltage, Current and Resistance
Ohm's Law and Power Calculations
AC and DC Fundamentals
Series and Parallel Circuits
Circuit Protection
Fuses
Circuit Breakers
Control Panel Components
Terminal Blocks and DIN Rails
Power Supplies
Indicator Lights and HMI Panels
Wire Ducts and Cable Management
Relays
Relay Construction and Operation
Electromechanical vs Solid State Relays
Time Delay Relays
Normally Open and Normally Closed
Common Terminal
Transistors in Control Systems
NPN and PNP Outputs
Sinking and Sourcing
Floating Voltages
Causes and Measurement
Safety Considerations
Operating Principles
Step Up and Step Down
Sizing and VA Ratings
Earthing and Grounding
Protective and Functional Earth
Bonding
Shielding and Interference
EMI and RFI Sources
Cable Shielding and Separation
Filtering and Suppression
Wiring Practices
Wire Sizing and Voltage Drop
Termination Methods
Common Faults
Earth Faults and Insulation Breakdown
Loose Terminations and Coil Failures
Intermittent Connections
Fault Finding
Multimeter Use and Continuity Testing
Insulation Resistance Testing
Systematic Troubleshooting
Electrical Safety
Safe Isolation and Lock Out Tag Out
Working on Live Equipment