An electrical 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.

Electrical cables are used to connect two or more devices, enabling the transfer of electrical signals, power, or both from one device to the other. Physically, an electrical cable is an assembly consisting of one or more conductors with their own insulations and optional screens, individual coverings, assembly protection and protective covering.

One or more electrical cables and their corresponding connectors may be formed into a cable assembly,^[1] which is not necessarily suitable for connecting two devices but can be a partial product (e.g. to be soldered onto a printed circuit board with a connector mounted to the housing). Cable assemblies can also take the form of a cable tree or cable harness, used to connect many terminals together.