All Replies on Did you ground your dust collection system?

I didn’t but my ducting is metal and is in direct contact with the blower motor so no issues there.
I looked hard at PVC and my initial plans called for grounding but from what I have read, it’s mostly to keep from getting shocked when you touch the PVC. Do a search on the site. I believe there are several threads on this issue.
BTW, Welcome to LumberJocks. It’s a great place!

-- A bad day woodworking is still better than a good day working.

No. There are NO known incidents of residential/small shop explosions due to static buildup. None that we know of.
There are people who try to ground their systems. If you used all metal ducting, it isn’t hard. If you use PVC, it’s pretty close to impossible. The things I’ve seen tried don’t actually work for PVC. You could line the inside of the PVC with something metallic, but that is impractical.

Don’t worry about it.

What he said^^^^^^^

-- Our village hasn't lost it's idiot, he was elected to congress.

Another vote for not grounding PVC. I can often feel the static on the cone of my plastic cyclone, but rarely even get a shock from ant part of my system.

I was thinking about it the other day, and I do have a basement shop, so the relative humidity is rather high (usually around 60%) so that might help explain it. If your shop is in an are with very low humidity, you may have more issues with shocks. In that case, I would go with metal ducts work. Trying to effectively ground an insulator is a difficult task.

-- John

Have been operating a PVC ducted system for 3+ years without any problems. I have not seen the need to ground the system. Running several machines using a ClearVue cyclone.

-- Don't let perfection get in the way of plenty good enough

No, but do get shocks from Shop – Vac!

-- Lifting one end of the plank.

Nope…...No need to…..!!

-- " There's a better way.....find it"...... Thomas Edison.

I did not. This article from FWW offers some information that you might find helpful.

https://www.finewoodworking.com/membership/pdf/8046/011153048.pdf?fww_sid=djMtZDRkZjE1NDAtOWQ0OC0xMWU3LWI0ZGUtMTIzZGNmYzhjMjVlfDE1MzY5NjY4MTc%3D&fww_token=d803173fd25e7a12dac5961ce3ef7a13

If the link doesn’t work the article is from FWW issue number 153 from January 2002. The author rightly stats that NFPA regulations for grounding apply to dust collection systems 1500 cfm and higher, much higher than our typical 2 hp systems. We don’t ground or shop vacs which are dust collection systems of a much smaller scale. Some folks say they get shocks from their shop vacs but they aren’t of sufficient energy to cause combustion.

I used PVC on my system and I don’t get any static even during the dry winter.

Thank you everyone!

-- Two thumbs and counting

Another vote for no. I am using 4” PVC, I questioned doing it (grounding) as well because a safety mechanism designed for industrial level dust has become urban legend and you will die if you don’t for every small shop or garage. Looking at my homes central vacuum system that has still not exploded to date and it just didn’t pass the common sense test for me. However….as a nod to the principle of static build up, I planned for a removable end cap at the further point away from the dust collector that I can remove and give a spray of static guard or fabric softener while the DC is running.

I’d recommend grounding by wrapping wire around the outside of plastic pipes and connecting them to something metal that’s grounded.

Static build up can be problematic in a couple ways. It can give some nasty shocks. My Dust Cobra repeatedly zapped me if I vacuumed large amounts of dust then touched the hose clamp so I had to ground that. The static can also interfere with electrical accessories such as Wixey readouts and mess up the readings.

-- See my work at http://altaredesign.com

Try some anti-static hose.

No, but do get shocks from Shop – Vac!

- Andre

-- "I build for function first, looks second. Most times I never get around to looks." MIke in CO

What he said^^^^^^^

- Fred Hargis

+1 ive used pvc for the last 20 years with no problems.i occasionally get the hair on my arms to stand up from the static but not much else.

-- working with my hands is a joy,it gives me a sense of fulfillment,somthing so many seek and so few find.-SAM MALOOF.