Fusion:
First, Welcome to ECN forums!!
I'm a fan of raceway installation over direct burial personally. Yes, any raceway located outside...will have water infiltration and condensation, therefore it is considered a wet location and requires conductors with suitable insulation.
My areas in NJ, the residential BUD (buried underground distribution) is all utility installed and maintained. The majority of their installs is DB primary & secondary. On rare occasion they have a contractor install conduit for them, mostly PVC
Comm jobs here (Pad mount xfr) the POCO requires 4" sch 80 PVC for the primary feed (13.2KV), contractor installed, pole to pad; POCO supplys & installs primary (HV) cabling & terminates. All of the private sites with HV service & distribution utilize raceways, not DB. PVC is the majority, concrete encasement is not unusual.
Someone else may have resi HV dist experience & thoughts
Have you checked with the local AHJs for any input?
