Actually, I have not installed one. I still use the orignal converter. It is enough to run the lights
, and my vent fan.
The 15 A breaker would be before the converter. There would also probably be a few other breakers after that. One feeding the converter. Since there is a 10A breaker for all the plugs in the trailer, I gotta assume there is a reason for this, so 10A breaker for the plugs. I would also install one more 15A breaker for a plug that I install below the garbage bin, and also one on the outside of the trailer. The breakers would likely be in a row beside the converter.
Main - 15A - 20 A, if I find a 20A version of this:
Power inlet dimensions needed
Converter - 5A
Existing plugs - 10A
New plugs - 15A
So, four breakers in a row.
It looks like Marinco does make a 20 A version of the power inlet, but i don't like the prong arraignment:
20 Amp Power Inlet (white) | Marinco
I was hoping for something like this: