My install
Cord (park to RV)
"line" RV inlet to added 50 amp outlet
Autoformer
Added 50 amp "Pigtail" from Autoformer to ATS.
And that's how you shoudl do it.
Logic:
Device is at the RV end of things so line loss in the shore cord is included in what it looks at when deciding if boost is needed,, Also it's out of sight so passing sticky fingers do not stick to it.. Likewise it's always there so I can not forget it cause I'm only here for the one night.
And some parks,, Have a "No Autoformers" rule. so they too won't see it,, I just plug in direct via my surge guard.
And that's all.