I wonder why they thought "PVC" wasn't sufficient and had to spell it out "rigid polyvinyl conduit"??? Seems to keep getting more complicated to me instead of simpler:( Plus they're using more ink:) Steve...
Steve: Are you referring to whats printed on the side of a stick of conduit? The only reason I could see them printing out " Rigid Polyvinyl-Chloride" is so there is no ifs and or butts about what it is.. Ya never know someone may try to sub "CPVC" for "PVC"..
Schedule 40 Rigid PVC I notice says for underground and above ground use. Are they still making Schedule 80? I cant seem to find schedule 80 PVC around here.
"SCH 80" is another one of those "I can't describe subject to physical damage but I know it when I see it" things. If the AHJ thinks things are subject to damage, suppliers will stock Sch 80. It usually gets used for a PVC riser coming out of the dirt here. Commercial and certainly any service conductor raceway. Not so much for a 1&2 family outlet out in the garden.