If I'm understanding you correctly, you'll be able to use your standard outlet at your home using an adapter like the Mighty Cord # A10-1550 , but you won't be able to use a standard extension cord . Using a household extension cord with an improperly small wire gauge can damage the cord and/or your RV's electrical system.
Instead, there are a variety of extension cords available that are designed for RV use. 30-amp RV extension cords typically feature 10-gauge wire, and 50-amp cords usually... view full answer...