We used the gray pvc pipe with sweeping elbows. Was a bit pricey, but I needed it. The 2 gauge wire was almost $800! I found a 24 circuit power box on eBay for $100 (new), do I got that. I didn’t use the metal conduit as that stuff was pricey, I used mc cable which has the wires already inside and of course the proper fitting for it. If ya look around on eBay you can find some good deals on the stuff you’ll need.
My Aunt and Uncle wanted to remodel their house on the ranch in Creston. He went to get a permit for doing it, all the crap the county wanted done before they would issue a permit was just too much for them and on top of that, the permit(s) we’re gonna run them $80k! So they decided to go ahead without any permits. SLO County is a money hungry entity and that why I couldn’t afford a shop!