6-6-6-6 SER service entrance cable with nominal diameter of 738 mil, has a current rating of 55-Amps at 60 deg C, 65-Amps at 75 deg C and 75-Amps at 90 deg C. This 1000-ft annealed copper cable has a voltage rating of 600-Volts. The SER service entrance cable is UL 44/83/854 listed.