Briselec, You are absolutely right mate. The Grey stuff is u-PVC (UV-stabilised PVC). The Orange stuff is Chemically resistant PVC. I have never ever seen Orange PVC conduit being painted and I mean there is HEAPS of it used over here, a lot of it by Power Companies. I just read in AS/NZS 3000, it is supposed to be painted if not UV stabilised. You learn something new every day.
