Thomas, RIGHT AGAIN!!! I have yet to have pulled a permit or been visited by an inspector with the following sort of exceptions. A government guy came out to inspect a 5 wire barbed wire fence I put up on a GOV assistance program. They require all pipe to be painted and capped to prevent rain water getting in, certain designs to be followed, and such.
My septic systems had to be registered with the DEQ. IN one instance the installer (lisc for self inspection) nevertheless had a state inspector come out anyway to uh huh his work.
I have 375 amp service to the house, 2 each 200 amp breaker boxes with 200 amp mains, 4 sub panels (and counting) and not a single inspection. Here in rural Oklahoma you don't need jacks or better to open, just open on your own guts. Of course I used only lisc electricians who did everything to code or better (I demanded that)
If a plastic (1/8 inch ID) hose run through the same conduit as 6-3 with ground in an insulating jacket as well as individual insulation (except ground) is a dangerous thing I'll eat my VOM.
Regarding the trick with the glued up conduit:
The electrical supply houses sell a little piece of fluff with a leader on it. You tie on your own light string and use a small vacuum cleaner to suck it from where you put it into the conduit to where you want the wire to exit. There is no conflict between a tight fit of the vacuum nozzle and the string when you use it to suck instead of blow.
Works pretty good for pulling additional wires in an existing conduit. I'd hate to try to pull the 6-3 with ground through 3/4 conduit (without the air hose added in) it there were very many bends. I will have considerable elbows in this run so will not consider gluing until the wire and air hose are all in place.
Pat