Raceways are typically plastic around here. Sch40 or 80 in the ground with sch 80 risers.
I was asked the question because someone has a 110' service lateral to put in, piped all the way and they have that much SER in the shop. Money is the main issue
I was thinking it should be OK and I can't really find a violation but 338 and 230 are pretty vague in this area.
