1.1
Generation and Supply
How electricity is generated and distributed to buildings
1.2
Circuit Protection and Consumer Units
MCBs, RCDs, and how consumer units protect circuits
2.1
Electrical Units and Calculations
Volts, amps, watts, ohms, and Ohm's Law
2.2
Simple Circuits and Switches
Series and parallel circuits, switching arrangements
3.1
High Powered Appliances
Immersion heaters, showers, and dedicated circuits
3.2
Testing and Faults
Using test instruments to identify electrical faults
3.3
Outcome of Faults
Consequences of electrical faults and how to prevent them
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Short Answer Quizzes
Test your written knowledge โ AI-marked with personalised feedback
These three quizzes test whether you can explain key electrical concepts in your own words โ including Ohm's Law calculations, circuit protection, and fault diagnosis. Your written answers are marked by AI against the Unit 202 workbook, with feedback on what you got right and what to review.