1. what two things does the earth wire help to prevent?
- fire and electric shock
- fuse blowing
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Other questions in this quiz
2. what are the metal parts of a plug made of?
- copper or brass
- iron or steel
3. what colour is the live wire?
- yellow and green
4. what wire is green and yellow?
- neutral wire
- earth wire
- live wire
5. what is the voltage of mains supply?