If you only have 30amp service cord here is a
bunch of different adapters from 30amp to 15amp, 50amp to 30 to 15amp and so forth.
Some are dog bones some are just adapters.
Didn't realize Bay Stars only had 30amp service thought all Newmars had 50 amp service cords.
You would run a standard power cord for 15 or 20 amp service cord to outlet on side of house or building from adapter.