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Thread: Earthing pvc pipework
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29th May 2005, 10:39 PM #1
Earthing pvc pipework
Hello,
Seeing the post of Soren's workshop has prompted a question. I believe I'm seeing pvc ductwork for his dust extractor system. I've heard/read somewhere that pvc should be earthed because of the possibility of static electricity and thus the potential for fire. I've been toying with the possibility of using pvc for a routing system for dust extraction when I finally get my workshop sorted out properly (somewhere between now and 2014).
I've used a 5 metre length of pvc between my Triton sawbench and dust collector for some years now without any problem.
Is this idea of fire a realistic possibility or is it just an excuse to sell yet another product?
Cheers,
Keith
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29th May 2005, 10:52 PM #2
Keith,
There's HEAPS written on the subject, in summary a domestic system has little chance (read none) of a static induced fire happening, and is almost impossible to satisfactorily earth in any case.
Have you checked the "best of the best" forum links?
http://www.woodworkforums.ubeaut.com...ad.php?t=16776
Check these links for starters, there are a number of others which I haven't searched, try searching "machinery connections" "PVC ducting" if you need more:
http://www.woodworkforums.ubeaut.com...t=earthing+PVC
http://www.woodworkforums.ubeaut.com...t=earthing+PVC
http://www.woodworkforums.ubeaut.com...t=earthing+PVC
http://www.woodworkforums.ubeaut.com...t=earthing+PVC
If you want some practice you can drop over to my place next weekend when I'm hopefully finishing mine off!!
Cheers,
P
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30th May 2005, 11:38 AM #3
Fantastic... All questions answered.
Search, then post... Search, then post.
Keith
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30th May 2005, 11:57 AM #4
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30th May 2005, 01:34 PM #5
If you really want more info do a google search and see how many US forums are getting heated over this.
It seems to be a continual hot topic with no conclusive outcomes apart from some 'cyberscraps'Stupidity kills. Absolute stupidity kills absolutely.
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30th May 2005, 01:53 PM #6
I saw an interesting episode of 'Myth Busters' on the plane last week.
The 'myth' that they were trying to bust was that a construction worker was killed by a static discharge from a lenght of PVC pipe that he had been sand blasting to get paint off it.
The outcome was that they could not get a static charge big/strong enough to generate a lethal discharge because it kept leaking away too quickly to build up to a lethal potential.
PS. I know that 'Lethal Discharge' and 'Static enduced fire/explosion' are different but they are sort of the same. :confused:Cliff.
If you find a post of mine that is missing a pic that you'd like to see, let me know & I'll see if I can find a copy.
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30th May 2005, 02:28 PM #7Originally Posted by Cliff Rogers
I love how they prove/disprove the theory, then set about destroying everything by the most dramatic method possible.
Brilliant!Greatest Movie Quote Ever: "Its good to be the king!"____________________________
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30th May 2005, 07:03 PM #8
I hate myth busters. :mad:
What right have they got to have such a funn job.
I want to be paid lots of money to build weird stuff & blow it up too.Any thing with sharp teeth eats meat.
Most powertools have sharp teeth.
People are made of meat.
Abrasives can be just as dangerous as a blade.....and 10 times more painfull.
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30th May 2005, 07:06 PM #9
Soundman, sit down and shut up, it's on soon
NB. Your avatar, you know he was gay???Stupidity kills. Absolute stupidity kills absolutely.
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30th May 2005, 08:05 PM #10
Even my soon to be 9 year old son loves Mythbusters - I think he would love to have a job like that - after he retires a the Formula 1 world champ
CheersThe Numbat is a small striped marsupial whose whole diet consists of termites.
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30th May 2005, 09:09 PM #11
I have not bothered specifically earthing my PVC ducting, mainly because it is fixed with metal brackets into the brickwork all along, and I surmised that this would be 'earth' enough. (crossing fingers)
Bitingmidge
Look forward to see the pics on Monday
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30th May 2005, 09:40 PM #12
For goodness sake Soren, stay on the the topic!
..............
Oh.......sorry............that is the topic.Greatest Movie Quote Ever: "Its good to be the king!"____________________________
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30th May 2005, 09:56 PM #13Originally Posted by Soren
I thought I'd see how long I've been "nearly finished":
Originally Posted by bitingmidge July 2004Originally Posted by bitingmidge 23 May 2004
Originally Posted by bitingmidge 3 April 2004
From all of that, I now conclude that each year about this time I get the urge to work on PVC. Therfore there is a chance that I will be finished soon, failing that, it will be at least another year!
help, I think I'm drowning in woodchips
P
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30th May 2005, 09:57 PM #14Originally Posted by SorenCliff.
If you find a post of mine that is missing a pic that you'd like to see, let me know & I'll see if I can find a copy.
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30th May 2005, 10:03 PM #15
I'm convinced
After reading one or two articles whose links were included in bitingmidge's post, I'm convinced its all a bit of a furphy.
Yes, in the most extreme circumstance, if everything falls into place and enough voltage is present, it is possible to have a problem. Not very likely though...
You could also be walking along the street and have a solid gold jumbo jet fall on you. Possible, but not very likely...