5218719
Beschreibung
Karteikarten von Sarah Collinson, aktualisiert more than 1 year ago
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Erstellt von Sarah Collinson
vor etwa 8 Jahre
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| Frage | Antworten |
| What is the blue wire? | Neutral wire - attached to the left-hand pin |
| What is the brown wire? | Live wire - attached to the right-hand pin |
| What is the green/yellow wire? | Earth wire - attached to the top pin |
| Why must appliances with metal casing be earthed? | So that the current flows though the ground rather than the casing. It prevents the casing from becoming live. |
| Why does the earth cable touch the casing? | If the live wire comes into contact with the casing, the current has to flow back through the earth wire into the ground. |
| What does RCCB stand for? | Residual current circuit breaker |
| What is the purpose of an RCCB? | If the current is different through the live and neutral wires, it cuts off the circuit. |
| What does a fuse do? | If the current flowing through a circuit is too high, the fuse melts and breaks the circuit. |
| Which wire is connected to the fuse? | The live wire |
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