Gauge:NEMA 10-30P male plug ,30 amp,125/250 volt for dryer plug.14-30R female connector, 30 amp,125/250 volt.ETL listed whole product.1.5FT The good quality of the STW cable 150℃ with the FT-1 level fire resistance.10 gauge indoor/outdoor water resistant jacket.Pure copper can avoid the cable getting overheating from long-time use.Molded plug, which is safer than assembly plug.1.5FT Grounding wire can directly inserted into the socket, making the production safe.Smooth pin,easy to install. Designed for construction,home appliances,RV camping,trailers,etc We can guarantee 12 months money back and 24 months quality warranty.If you have any questions,please contact us Note:This adapter suit for 10-30R receptacle.It means the male plug should be plugged into 10-30R receptacle. Dryer Adapter 10-30P to 14-30R EV Charge Adapter 125/250Volt. 3 Prong 30Amp Male Plug to 4 Prong 30 Amp Female 1.5FT Extension Cord with Green Grounding wire.STW 10/3. ETL Listed.This adapter should be plugged into 10-30R receptacle.