NU-CORD 94579 25-Feet 30-Amp RV Extension Cord Plug: TT-30P Receptacle: TT-30R 30 amp 125V 10/3 AWG wires Cord type STW Plug: TT-30P Receptacle: TT-30R 30 amp 125V 10/3 AWG wires Cord type STW