I am installing a sub-panel in my basement, and I am hoping to use an existing (unused) conduit to run the feed from the main panel, using copper wire (3 * 2awg + 6awg ground). The conduit is Schedule 40 PVC, 1.5 inches, and I believe I am ok as far as fill factor and ampacity goes. The only problem might be that the conduit runs directly behind drywall with no gap, and parallel to a stud - there is no 1 1/4 inch clearance. According to 300.4(D) Exception No 1, rigid nonmetallic conduit is ok in this situation, with no steel plates, sleeves required. My Questions is: does Schedule 40 PVC count as 'rigid nonmetallic conduit' in this case?