New Southwire Welder Power 25-ft 3-Prong Indoor/Outdoor Stw Heavy Duty Lighted Extension Cord. Priced $65 dollars elsewhere. 8 guage STW jacket for superior performance and flexibility. Lighted receptacle end indicates when power is on. Molded ends offer safety and convenience on the job site. Offers more portability to welding machines. Extension cord rated at 4- Amps, 250 Volts and 10k Watts.