If you hold a pipe tool or cable tool, you can see a disconnect, I think just add that to ducts and it will be good, that does make ducts annoying. VFX for that would be cool if done right, like, the VFX would only play from a broken end of a cable activley recivng electiricity, as if a random segment of cable with no commections to electricity sparked, it would make no sense and be unimmersiv in my opinion