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This lesson covers electrical safety in domestic circuits, including the three-pin plug, fuses, circuit breakers, earthing and double insulation, as required by the Edexcel GCSE Combined Science specification (1SC0).
All UK mains-powered appliances with a cable use a three-pin plug that fits into a wall socket. The plug contains three wires and a fuse.
| Wire | Colour | Pin Position | Connection |
|---|---|---|---|
| Live | Brown | Bottom right (when viewed from the front, with the earth pin at the top) | Connected to the longest pin on the right |
| Neutral | Blue | Bottom left | Connected to the pin on the left |
| Earth | Green and yellow stripes | Top centre | Connected to the longest pin at the top |
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