This video talks about the power basics surrounding RVs and how their power configurations work. I touch on What both service types are, between 30amp/120V service, and 50amp/240v service, and how to power devices off of different plug types.

As mentioned in the video:
1030P to 50Amp Service Receptical
https://amzn.to/3dQvDJ8

Add this to get a 30 Amp Receptical
https://amzn.to/3dPWZiJ

As always please consult a professional if you're just "not sure".