Schedule 80 and Scedule 40 conduit have the same size O.D., but Schedule 80 has a smaller I.D. If using the same trade size beyond the transition, physics will obviously prevail. Beveling the I.D. edge helps... but a better remedy is to transition the smaller sizes to one size larger for SCH80. The difference isn't as prevalent for larger sizes.
Originally Posted by mikeybmdb32
Additionally, the typical reason for using Schedule 80 is where there is increased likelihood of damage. Making these Schedule 40 instead may actually be a Code violation.
I'll never get there. No matter where I go, I'm always here.