I am trying to run a 50 ft. power cord to my new dynasty 350. Which wire gauge size I should use for this purpose to ensure I will not overheat anything when welding at high amperages (6 AWG possibly?). I am wiring the welder for single phase to a NEMA 6-50 receptacle (250v). Does the length of my torch and/or the length of my ground have any bearing on the size requirements of this cord? Torch length is 25 ft. and ground is 35 ft. Any suggestions are greatly appreciated.