Conntek PL520520 NEMA L5-20P to NEMA 5-15/20R Pigtail Adapter, UL Listed Plug (Male): NEMA L5-20P (20 Amps 125 Volts, Locking) Connector: NEMA 5-15/20R (T-Blade Style allows for more versatility. Cable: STW 12/3 UL and c(UL) listed