[Best converter to use for upgrade in 94 warrior?.]

Is it a good idea to replace the old fuse and breaker box at the same time as the converter?

[Best converter to use for upgrade in 94 warrior?.]

Right now the refer only runs on propane.  Although refer has a setting for electric or gas, I was told it doesn’t run on AC.  The fuse panel has a fuse labeled refer too.
maybe I need to add another breaker the  panel?    I’m perplexed.

 

and again if anyone has a suggestion as to what is a good converter to get and is it a good idea to get a higher amp converter or why would I need a higher rate converter?   

[Best converter to use for upgrade in 94 warrior?.]

I erroneously thought the converter was needed to run the refer when connected to shore power.   
now my understanding is the refer just goes through the breaker panel and fuse.  I didn’t want to run the refer off DC because of the crazy drain it would have on battery. 
 

mostly I want to know what is the best mfg and type of converter to use to replace the old one who’ve is a 35amp.  The dimensions of the old converter is 4”H x11”W.

if I do run the refer of AC do I have to increase the Amp of the converter or does the converter have nothing to do with it at all.?  
 

In what scenario would I have to increase the amperage of a converter?

 

thank you for helping me answer these basic questions.  It can be a little confusing learning about the relationships within the electrical systems as I have no prior experience.

 

 

 

 

 

 

[Best converter to use for upgrade in 94 warrior?.]

What is the best converter to use for replacing the old analog model 6300 35 amp converter?  I want to increase the amperage to be able to run the refer of shore power.  So I thought. 50amp would do it.  What brand and models have past RVers used?