Conntek Y1450L1430 Y Cable NEMA 14-50P RV/Generator/Range Plug to Locking 4 Prong L14-30R Female Adapter NEMA 14-50P 50Amp RV/Range/Generator Power Plug NEMA L14-30R 30A 125/250V Locking Female End STW 10/4 600V 30A rated Outdoor Jacket Cord