TES Electric Supply TES 18 In. 10/3 30 Amp (Male) to 50 Amp (Female) RV Adapter 10/3 STW 18 In. RV adapter with molded on plug and adapter 30 amp NEMA TT-30P plug (male) to 50 amp NEMA 14-50R receptacle (female), 1875 rating watts 3 wire cords, super duty construction Weather Resistant