Mains Electricity

A set of vocabulary flashcards reviewing the key wires and safety functions of a three-core cable in mains electricity.

Three-core cable

An electrical cable composed of three insulated wires: the live wire, neutral wire, and earth wire.

Live wire

The brown wire that carries the potential difference of $230\,\text{V}$ and connects to the fuse, which melts to break the circuit if the current and temperature become too high.

Neutral wire

The blue wire that completes the electrical circuit and operates at a potential difference of $0\,\text{V}$.

Earth wire

The green and yellow safety wire at $0\,\text{V}$ that directs current safely into the ground in the event of an electrical fault.