Good judgment comes out of experience. Experience comes out of bad judgment.
It seems pretty obvious in hindsight, but somehow didn't come to my head that I might have problems running fish tape through a rigid plastic conduit with a few bends. Guess it is not usually a problem, otherwise it would be widely documented - or it may have been just my dumb luck, but...
Turned out that a wide and big 1" conduit run of 26ft with two 90° bends is not passable in either direction.
Took me a split second to realize why - the bell. The one that is at one end of each conduit component. The rest should be obvious.
- Do a dry run - works pretty well with plastic conduit, it holds up pretty well and you can probably get away with running it through even though it's not glued together yet;
- Plan ahead and remember that you may not be able to pass a conduit in one direction.