Working on a residential project. Client is having me install a 400 amp service in an obscure way. Basic set up is 2 200 amp panels. 1 is to be located in the garage 40 feet away. So i have to install a 200 amp breaker next to the main panel (positioned for easy runs to attic). My plan was to bring in 2 sets of 4/0 AL through 2.5" schedule 40 PVC into the breaker enclosure. 1 set would feed the disconnect and the other set would pass through the disconnect, through a nipple, into the main panel. AHJ is telling me i cant pass through the disconnect because of 230.7 and 230.70(a). I believe 312.8 applies which permits my plan. 230.70(a) seems to be really nitpicky as the nearest point of entry is like 2' away. And i really dont see how 230.7 applies.