Plugs & wires

Cards (9)

Three-core cable
Wire that attaches a device to the mains supply (like a kettle)
Live wire is brown
Neutral wire is blue
Earth wire is yellow and green
Why is insulating plastic wrapped around each wire
So it doesn’t conduct electricity to things it touches
Function of the live wire
Live wire carries the alternating potential difference from the mains supply
Function of neutral wire
Completes the circuit
Function of earth wire
Safety wire to stop the appliance becoming live
Potential difference between live and earth wire
230 V
Potential difference between neutral wire and earth wire
0 V
Which wire is dangerous to touch
Live wire