The metal most commonly used in electrical wiring is copper. Because of its excellent conductivity, copper is able to efficiently transmit electrical currents with minimal resistance. This makes it ideal for building wiring, electrical circuits, and electronic devices. Additionally, copper is relatively flexible and easy to work with, enabling it to be drawn into thin wires. While other materials such as aluminum are also used in wiring, copper remains the preferred choice for most applications due to its reliability and long-lasting performance, despite being more expensive than some alternatives.