Great questions. You will need to determine that your lights, tv, and fridge run off 110v/120v power. Many systems run off 12v power for lights, TV, and there are even a few refrigerators that run off that power. The adaptors are already in most RV's to make sure when you plug into shore power, all the other conversions. are made within the power distribution and converter box.
Because you are looking for 50 amp connection through a 110v ground, you can use adapters but it doesn't... view full answer...