Did you ground your dust collection system?

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Forum topic by mathguy1981 posted 09-14-2018 07:57 PM 718 views 0 times favorited 9 replies Add to Favorites Watch
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22 posts in 22 days

09-14-2018 07:57 PM

While shopping for DC parts, I’ve seen grounding kits and have seen a few videos where people ground their systems.
I understand that static electricity in PVC may build up, but how does an explosion happen? Does anyone actually ground their DC piping?

9 replies so far

View fivecodys's profile


1128 posts in 1754 days

#1 posted 09-14-2018 08:17 PM

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!

-- There' are two theories to arguin' with a woman. Neither one works.

View brtech's profile


1041 posts in 3041 days

#2 posted 09-14-2018 08:19 PM

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.

View Fred Hargis's profile

Fred Hargis

5069 posts in 2611 days

#3 posted 09-14-2018 08:27 PM

What he said^^^^^^^

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

View jmos's profile


859 posts in 2488 days

#4 posted 09-14-2018 10:14 PM

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

View Blindhog's profile


70 posts in 1167 days

#5 posted 09-14-2018 10:39 PM

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

View Andre's profile (online now)


2011 posts in 1924 days

#6 posted 09-14-2018 10:40 PM

No, but do get shocks from Shop – Vac!

-- Lifting one end of the plank.

View Rick  Dennington's profile (online now)

Rick Dennington

6088 posts in 3312 days

#7 posted 09-14-2018 11:19 PM

Nope…...No need to…..!!

-- " It's a rat race out there, and the rats are winning....!!"

View hokieman's profile


189 posts in 3872 days

#8 posted 09-14-2018 11:24 PM

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

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.

View mathguy1981's profile


22 posts in 22 days

#9 posted 09-15-2018 12:00 AM

Thank you everyone!

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