TT-30P Male to L14-30R Female Generator Transfer Switch Adapter Cable, 30 Amp 3 Prong to 4 Prong Plug Adapter, RV to Inlet Box, 1.5 Feet

Rophor Generator Transfer Switch Adapter Cord TT-30P Male to L14-30R Female, 30 Amp 3 Prong to 4 Prong Generator Plug Adapter, RV Generator Plug to Inlet Box, 1.5FT

Houseables 30 Amp Generator Cord 4 Prong, Extension Generator Cable, 10 FT, 125-250v, 7500 Watt Max Rating, UL CUL, NEMA L-14-30P, Rubber, 10 Gauge, Heavy Duty, L14-30, Transfer, Twist Lock Power Cord

Reliance Controls Generators Up to 7,500 Running Watts PB30 30-Amp NEMA 3R Power Inlet Box, Gray