A cable can be either a rope or an electrically conducting device in electrical circuits. An electric cable is an insulated wire, with the insulating material and its thickness depending on the voltage handled by the cable. The electrical cable industry has developed cables for use with 110Volts AC to 230KV AC.

For domestic and other low voltage use, cables are PVC insulated. There can be single core or multi-core cables, depending on the type of use and the amount of current they carry. One of the characteristic of a cable is its flexibility. To facilitate this, the conductor is usually stranded so that they can be twisted easily at the terminals of a device for connection to the source of power or load.