Lesson introducing and explaining the various methods of making the use of electricity safe. Including fuses; circuit breakers (RCD); difference between alternating current (AC) and direct current (DC); wiring a plug; plug safety; earthing and double insulation - contains practice questions for students.
Ideal for AQA GCSE (9-1) P2, Cambridge iGCSE P8 and more
Developing: State the hazards of: 1) damaged insulation 2) overheating of cables 3) damp conditions.
Securing: Explain the use of fuses and circuit breakers and choose appropriate fuse ratings and circuit-breaker settings.
Exceeding: Explain the benefits of earthing metal cases.
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