Ah! The "Cable Guys!!"
I check grounding of the cable installer whenever I get the chance. It's doubly important with powered cable (<=150 v to grd) (From all those new meter pedestals on each street corner).
Sometimes I get the comment from the cable installers that their work is not my business; they don't need a permit. After I give the recalcitrant ones a WRITTEN correction notice (with a copy to the job super) I explain that they still need to comply with Code req. even without a permit, I WILL comment on unsafe installs (80.23, 110.3 #8), and that, if not remedied, they could be disconnected and/or their system powered down(80.13).
In their defense, most installers, when shown the importance of proper grounding, end up revising their work to passable levels.
