My understanding is that feeder wires need to be in conduit for the whole run, but running schedule 40 through my basement joists seems awful and maybe impossible. I’m wondering if I can use a more flexible conduit from the main panel in my basement, then switch to schedule 40 where it leaves my basement and goes underground to the garage.
Additional info: Aiming to add a 100A sub panel from a 200A main. The run through my basement is maybe 50’ and about 20’ underground to the garage. Based on threads here I think I’ll need #1 aluminum THWN feeder wires. Would be thrilled to get any other advice. Planning to use the garage mostly as a workshop.