What is the function of the live wire, neutral wire and the earth wire in a British plug?
Live in US so not familiar with British plug BUT there can’t be that much difference. You have three wires. The hot wire is the one that will kill you if you grab it whilst standing in a puddle of water. The neutral is connected to the “earth” at the breaker (aka FUSE) box. The earth is normally tied to a copper stake 6-10′ long driven into the ground near the breaker box. Given that, one could conclude the neutral is the same as the earth and it is except when the neutral carries current that can slightly raise its voltage above earth, depending on the magnitude of that current. The important thing to remember is the “ampacity” of the conductor used. The more amps delivered, the wider the conductor must be (diameter) or the conductor will heat and and become annealed eventually creating a higher likely hood of electrical fires. Obviously you don’t try to deliver 30A using a 20A wire. The breaker must also match the conductor attached to it. If a 20A wire is connected to a 30A breaker
