Among some of my horrid experiences with Union ECs in Buffalo NY that think they are smart enough to do this sort of thing, one sticks out head and shoulders above the rest:
New build commercial space. Metal drywall studs with holes placed at the top for cable runs...whether it was AC or Voice/Data. Instead of using finesse (or grommeting like it's SUPPOSED to have) when pulling through, these geniuses just tugged until the cable cooperated. What that meant was out of approx. 30 cables, there were only 2 that weren't cut or shorted in some way. My company re-ran them...and the EC paid for the re-install.
They should just stick to AC.
