Conntek PL1420L1430 Pigtail Power Adapter, Yellow with Black Plug (Male): NEMA L14-20P ( 20 Amps 125/250 Volts, Locking) Receptacle (Female): NEMA L14-30R (30 Amp 125/250 Volts, Locking) Max Rating: 5,000 Watts Cable: STW 10/4 remains flexible in colder weather conditions Enables a device with a L14-30P plug into a L14-20R outlet