With all the issues with breakers tripping when a/c starting, why haven't any of the trailer manufacturers add what you did to solve the problem. It's a simple solution. i know, $$, build as fast as you can and after it leaves the factory, who cares. I believe that most of us who actually use the product are smarter than the engineers that design them. I know by just cruising though some of the posts in several section threads that there are many people totally clueless about how trouble shoot problems on their trailer.
For example of doing something stupid, I have a FR HW296 and on the 1.5 " discharge for the grey 12 gal. tank once you remove the cap, they have a another 1.5" screw on bushing with a piece that slides in with an barbed outlet opening of 5/8" I.D that you attach a hose to with a hose clamp. How long do you think it takes to discharge into the sewer. Well not thinking, went to store and got a clear 5/8" I.D. x 3/4" O.D. x 10' long hose. Started to put together, What am I thinking, how stupid.
My solution was 2" x 25" blue economy discharge hose, which I cut in half and then cut one half in half again. I normally use the half for full hook up one of the half's for dump station and last half as a spare or extension. I also go four plumbing fittings and two hose clamps. That hole set up was 28.00. Time to dump tank about 3 min.
I have a post of the set up in the Pop Up Section.
TV = 2003 1500HD 4x4 Chevy
Silverado Crew Cab 6.0L V8 W/3:73
2011 Rockwood HW296 16" Box