Hi there, I just got a pre-owned travel trailer, 2003 Wildcat 29BHS, everything so far seems to be working well electrically. I was checking the convertor to see what this trailer came with and noticed the "main" 120v breaker is only a 20/20 amp split breaker. Does this seem right. I see many of the newer replacement units have a 30/20 split breaker. My trailer does have a 30 amp cord. Any help or insights are appreciated. I've attached a photo of the unit.