The three-pin plug used to connect the kettle to the mains. A fault occurs in the kettle causing the live wire to touch the metal case of the kettle. Explain how the safety features of the plug operate when this fault occurs.

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Q1.

Figure 20 shows the three-pin plug used to connect the kettle to the mains.

A fault occurs in the kettle causing the live wire to touch the metal case of the kettle.

Explain how the safety features of the plug operate when this fault occurs.

(6 marks)