AC cables are complex, high-insulation three-phase, four-wire, or five-wire cables designed to transmit alternating current from power sources, like wall sockets, to electrical equipment. Common applications include computers, monitors, printers, audio/video devices, and household appliances. In contrast, DC (direct current) cables feature positive and negative poles with simpler designs. Unlike standard household AC plugs and sockets, DC power cables have various non-interchangeable types.