On Wed, 15 May 2013 15:07:26 -0700, wrote:

What you have doesn't work, so you have to take it back, right?
Find a piece of conduit at HD to use or take a piece with you.
Make sure it all works before you leave.

I did exactly as advised, and found out the answer to the size enigma can
only be had with experience, as measurements do not prevail when it comes
to flexible conduit connection sizes.
http://www3.picturepush.com/photo/a/...g/13045061.jpg

It turned out that this fitting (that clearly measured at one inch
diameter) isn't even close to what they call a one-inch fitting:
http://www3.picturepush.com/photo/a/...g/13045051.jpg

In fact (even though it clearly measures out at 1 inch), it's not even
close to what they call a 3/4 inch fitting; it turns out that it is a
half-inch fitting!
http://www4.picturepush.com/photo/a/...g/13045057.jpg

So, the end result is that the original conduit and both sides of the
elbow were actually nominally half inch sizes all along!