Could be the same as wall-mounted PVC hard lines; a grounding strap running the length of it, screwed into the plastic every foot or two. I'd probably try stranded bare copper grounding wire though, and loosely spiral it (as in, a loose spiral, not loosely-fitting) along the length of the hose, periodically epoxied, hose-clamped or otherwise tacked on.
Jeff. I have a somewhat similar post below. Maybe we are having the same issues...but this is what I intend to do. So bump to top of page, and maybe others with more experience can comment. 1. From my pipe clamp on the dust shoe, spiral bare copper wire around hose, would continue this to by dust deputy, all the way to the shop vac. 2. Ground my aluminum table the workbee sits on, bare copper wire screwed into a leg or 2. 3. Ground all stepper motors, take a wire from the stepper mount. All these would be connected at a single grounding block. Then run to a steel rod that was drilled through my concrete slab, and pounded into the ground. Second plan was to use my water piping as the ground Third plan was to connect to wall plug, only ground connected, leaving the others un-touched.
I would have thought that most if not all vac hoses had a sprung wire spiral sandwiched in-between a plastic skin cover as part of its "flexed" construction. Could this wire be grounded even though its probably steel wire and not copper?
Jeff Google “Fulton anti-static hose”. Rockler has a version too. But it’s a anti-static vacuum hose. I went and got a dust collection system grounding kit too. still trying to determine best ground termination though. Between the static from the hose and the very low humidity now that it’s cold, pretty sure it’s why my machine is stopping halfway through cut programs
Wanted tp follow-up. If you are running a shop vac, don't get the hose I posted about above. It's 2 1/2" and too wide to get any suction out of my shop vac! Killed my dust collection. Going to try going back to the 1 1/2" or 2" (had both) and just run a grounding wire on the outside. Just FYI, so folks don't waste 30 bucks on it. Might work with a standard dust collection system, but not a shop vac.
