Brain block and too lazy to look right now (sorry).
Now I know NM is not rated for 'WET' location,but ok for Damp.
I also understand anything in conduit under ground is 'wet'.

So to the point: IF I run NM across an open ceiling (not allowed above a drop ceiling),poke thru the out side wall with PVC,LB down into a bell box with a WR GFCI and an 'in use' cover.

Is that cool? Commercial application.