Typical 20A home circuits have a 20A CB and multiple 15A outlets and is not adequate for RV power.
And my house has a 15A CB with 270' of 14 gauge wire for 8 garage and outside 15A outlets (first one is a GFCI). It pays to check to determine exactly how your circuits are wired.
I also have a dedicated 20A outlet on a 20A CB. This is the only type of 20A plug that should be considered for a RV IMHO.
Note: Per above there are both 15A and 20A outlets available.
When on a 15A or 20A plug I first turn down my charger and never run the A/C. Keep in mind that the recommended sustained load is 80% of the rating and A/Cs are sustained loads.