Power cables are solid or stranded conductors surrounded by insulation, shielding, and a protective jacket.  These cables are designed for high voltages (>600 V). Generally the power cables are rated Low Voltage (<1kV), Medium Voltage (6-36 kV), and High Voltage (>40 kV). Applications for power cables are for use with heavy machines, feeders and branch circuits in industrial, commercial, and electric utility applications.  Important cable performance specifications to consider when searching for power cables include number of conductors, nominal outer diameter, rated voltage, rated amperage, and operating temperature.  The number of conductors is the number of insulated conductors in the cable.  The nominal outer diameter is the diameter of the cable or wire including insulation and jacket.