A cable is an assembly of one or more wires running side by side or bundled, which is used as an electrical conductor to carry electric current. It can also refer to a strong rope, especially of 10 inches or more in circumference, or an assembly of electrical conductors insulated from each other but laid up together. Cables are used to transmit electric power or telecommunication signals from one place to another, and they are extensively used in building wiring for lighting, power, and control circuits permanently installed in buildings. Additionally, a data cable is a cable that provides communication between devices, while a power cable is any cable that powers the device.