If i get the question correct scedual 40 pvc will do fine. I am an electrician in NH and the only time we now have to use scedual 80 in when it is subject to severe physical damage. However I have never seen sced 40 that has been trashed under normal use unless it is severly cold. The blue tubin (flexible non-metalic conduit) I have found is not as duable.
George