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UNIT 202

Electrical Principles

This section will give you an overview of the key electrical knowledge we will need as plumbers.

Your Progress
Lesson
 Quiz & Tasks
 Short Answer
1.1

Generation and Supply

How electricity is generated and distributed to buildings
Quiz Short Answer Flashcards
📖 Further reading Ohm's Law and Power Law →
1.2

Circuit Protection and Consumer Units

MCBs, RCDs, and how consumer units protect circuits
Quiz Flashcards
📖 Further reading Circuit Protective Devices → Circuits and Cables →
1.3

Earthing

Earth bonding, protective conductors, and safety
Quiz Flashcards
📖 Further reading Earthing and Bonding →
2.1

Electrical Units and Calculations

Volts, amps, watts, ohms, and Ohm's Law
Quiz Flashcards
📖 Further reading Ohm's Law and Power Law →
2.2

Simple Circuits and Switches

Series and parallel circuits, switching arrangements
Quiz Flashcards
📖 Further reading Circuits and Cables →
2.3

Wires and Cables

Cable types, sizes, and colour coding
Quiz Flashcards
📖 Further reading Circuits and Cables →
3.1

High Powered Appliances

Immersion heaters, showers, and dedicated circuits
Quiz Short Answer Flashcards
📖 Further reading Ohm's Law and Power Law → Circuits and Cables →
3.2

Testing and Faults

Using test instruments to identify electrical faults
Flashcards
📖 Further reading Safe Isolation Procedure → Safety Critical Electrical Faults →
3.3

Outcome of Faults

Consequences of electrical faults and how to prevent them
Quiz Flashcards
📖 Further reading Safety Critical Electrical Faults → Earthing and Bonding →
Unit 202 — Electrical Principles

Ready for Revision

You've reached the end of the module. Consolidate what you've learned with flashcards and revision quizzes.

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📖 Whole-unit revision Electrical Principles Revision Guide →
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