I am moving into a new apartment complex and they have 4 assigned spots with 240volt 30amp charging. These spots are $75 and includes the charging, which is awesome! But my question is... Is this a NEMA 14-50 plug? Also will my car charge at 30 amps which should be 18 MPH? Or is it going to charge at a lower rate? I just want to make sure it'll be worth it. Thanks!!