Hello, I’ve been searching for a few days and can’t find my answer, or maybe just overlooking it, but I have a 2 1/2" hose from my S3XXL going into a Duststopper and then to my Fein Turbo I. I’m new but having disconnects during wasteboard surfacing, so I assume it’s from static. I have copper wire I’m planning to run inside the 6-8’ of hose; however, I don’t understand how it’s terminated. My Fein motor is sealed so I don’t know how I’m supposed to ground the end of the copper wire.
Ground is ground, but not neutral. So the wire does not have to go to the vac but to the ground on the vac plug or another ground like the Shapeoko frame.
My reference to neutral above is the hot and neutral wire are not the same as ground. Obviously the hot is not at ground potential but neutral COULD be. Never use neutral to ground something. This can lead to current eddies that make neutral above ground potential. In your electrical panel neutral and ground are kept separate for a reason. Electrical current takes the path of least resistance and you dont want that path to be neutral for grounding. There are a great many youtube.com videos about why you keep ground and neutral separate.
I get the neutral and ground wiring concept, but I don’t understand when you say to “ground on the vac plug”. How? I see several people running a copper line through the hose and to a large washer that’s actually touching the ground. That seems easy enough, but I see others saying it won’t work. How do I terminate the copper wire at the vac side to ground it? Thanks
I dont have a festool so not familiar with their plug. If it has a 2 prong plug yes you could use the adapter. But as I said earlier you could just ground to the frame of the Shapeoko. You just want to shunt static to ground so the potential does not build up on the hose.
If your Fein isn’t designed to ground through the hose, then my understanding is the way to ground would be to continue the ground wire around the machine and plug it into the same ground as the machine.
Check that the screw on your outlet is properly wired to ground and connect there?
I’m not sure that grouding through the Shapeoko frame is the best idea, for a couple of reasons;
Only the outer frame and Y rails are grounded so the X rail and Z axis are floating, you can’t ground to these usefully (unless you make changes)
That ground is also the 0V for the DC control electronics and noise injected there can start to mess with your USB connection
If there’s not an easily accessible external ground on the extractor, as this is just a static discharge situation and not “hunt the ground loop” I’d suggest taking the ground from a plug in a properly grounded socket, either your dust extractor’s plug (as Will suggests) or just wire up your own three pin plug with only a ground cable and use that to ground out the hose plugged in next to the extractor.
Yep, an advantage that has for ESD suppression is the 1M Ohm resistance to ground which makes it harder to create an opportunity for electric shock for the wearer. It also makes it hard to create any substantial ground loop current flow. It is still more than sufficient to drain away static charge however.