Conntek 20572: 30 Amp L5-30 Locking Style Generator Extension Cord, 50 Feet Plug (Male): NEMA L5-30P (30 Amps, 125 Volts) Connector (Female): NEMA L5-30R (30 Amps, 125 Volts) Gauge: 10 AWG, Max Rating: 3,750 Watts Jacket: Hard Serviced Cord, Outdoor Rated, Heavy Duty (STW) Approval: UL, C-UL Listed