RV Outlet NEC Code Question

time2roll wrote:
Not an electrician but putting that combo TT-30 and 5-20 outlet should not be an issue using the existing 30 amp feed. Nothing wrong with multiple outlets on one branch circuit, the 5-20 has a 20a breaker to limit power so good to go IMO.

Of course it does become easier to draw more than 30 amps and still most sub-panels have more branch capacity than the main feed.

You can have the city inspect your work if you have any concerns.

I am General Contractor and not expert in electrical, but did electrical in the past.
When I think your technical conclusion is correct, from the experience I can tell the City Inspector does not have to have electrical knowledge, although he might.
What inspectors do is checking out the build with the design, meaning you need to design and have it approved by Building Department for the inspection.
The Dept should have qualified planer who can elaborate on the design in their office.
Codes change from state to state and from city to city, so you can never tell....