Anybody have any suggestions for ways to quickly remove the charge
built up in a DC system? I have a PVC system that is not grounded (It
was initially, but the grounding wires were causing problems, not
allowing material to pass through, so I ripped it out). I'm now
getting shocks when I touch the blast gates. Can I just hook up a
temporary ground to uncharge the system, or something???
Hook wires to outside of ducting.
Touch with the end of a screwdriver blade that you are holding in your
hand. The end of the screwdriver does not feel the spark.
"Doug" <[email protected]> wrote:
>Anybody have any suggestions for ways to quickly remove the charge
>built up in a DC system? I have a PVC system that is not grounded (It
>was initially, but the grounding wires were causing problems, not
>allowing material to pass through, so I ripped it out). I'm now
>getting shocks when I touch the blast gates. Can I just hook up a
>temporary ground to uncharge the system, or something???
Phisherman wrote:
>
> However, in the wood shop, low humidity keeps the tools free from
> rust. Grounding metal blast gates will help, at least some.
I humidify to get up to 25-30% this time of year. My tools don't rust
at that level. Please don't confuse adding a bit of humidity during
cold, dry seasons, with humid conditions.
Barry
Are the blast gates metal? If they are why not just ground the gate
themselves? If they aren't...well, hard for me to suggest replacing
them (although very inexpensive for me to do anyway -- not my money,
right?).
;)
Mike
[snip]
> I'm now
> getting shocks when I touch the blast gates. Can I just hook up a
> temporary ground to uncharge the system, or something???
Doug wrote:
> Anybody have any suggestions for ways to quickly remove the charge
> built up in a DC system? I have a PVC system that is not grounded (It
> was initially, but the grounding wires were causing problems, not
> allowing material to pass through, so I ripped it out). I'm now
> getting shocks when I touch the blast gates. Can I just hook up a
> temporary ground to uncharge the system, or something???
Has anybody tried an laundry anti-static sprays such as "Static Guard"
applied to the outside of the PVC pipe?
--
Jack Novak
Buffalo, NY - USA
(Remove "SPAM" from email address to reply)
Wrapping the outside has no effect. PVC is an insulator. In fact, if you
put conductive paint on the inside and wrap the outside, you have a nice
long tubular capacitor!
Grant
Phisherman wrote:
> On 17 Jan 2005 14:53:23 -0800, "Doug" <[email protected]> wrote:
>
> >Anybody have any suggestions for ways to quickly remove the charge
> >built up in a DC system? I have a PVC system that is not grounded (It
> >was initially, but the grounding wires were causing problems, not
> >allowing material to pass through, so I ripped it out). I'm now
> >getting shocks when I touch the blast gates. Can I just hook up a
> >temporary ground to uncharge the system, or something???
>
> That's the problem with PVC. It is great because the cost is low and
> the inside is smooth and allows laminar flow. If your PVC is 6" you
> may be able to apply metal sticky tape to the inside and use a small
> bolt on the ends to attach a ground. I have been thinking about this
> problem and considering 4" PVC. Is there a conductive paint that can
> be applied to the inside of a PVC pipe? (Wrapping the outside with a
> ground wire has little effect.)
On 17 Jan 2005 14:53:23 -0800, "Doug" <[email protected]> wrote:
>Anybody have any suggestions for ways to quickly remove the charge
>built up in a DC system? I have a PVC system that is not grounded (It
>was initially, but the grounding wires were causing problems, not
>allowing material to pass through, so I ripped it out). I'm now
>getting shocks when I touch the blast gates. Can I just hook up a
>temporary ground to uncharge the system, or something???
That's the problem with PVC. It is great because the cost is low and
the inside is smooth and allows laminar flow. If your PVC is 6" you
may be able to apply metal sticky tape to the inside and use a small
bolt on the ends to attach a ground. I have been thinking about this
problem and considering 4" PVC. Is there a conductive paint that can
be applied to the inside of a PVC pipe? (Wrapping the outside with a
ground wire has little effect.)
"Doug" <[email protected]> wrote in message
news:[email protected]...
> I'm now
> getting shocks when I touch the blast gates. Can I just hook up a
> temporary ground to uncharge the system, or something???
>
Couple of options.
1. Use a stick to open/close the blast gates
2. Have your kids open/close the blast gates
3. Run a wire from the PVC to ground
4. Have your MIL open/close the blat gates
At work we convey thousands of pounds of plastic material a day through PVC.
We run wires from it to ground and have no problems. While Option 4 may be
the most satisfying, #3 should work as well.
On Tue, 18 Jan 2005 12:57:03 GMT, B a r r y
<[email protected]> wrote:
>Edwin Pawlowski wrote:
>
>> 1. Use a stick to open/close the blast gates
>> 2. Have your kids open/close the blast gates
>> 3. Run a wire from the PVC to ground
>> 4. Have your MIL open/close the blat gates
>>
>
>5. Run a humidifier. This is the option many electronic shops sue to
>control static.
>
>Barry
A higher moisture content will control static. Where I worked with
computers we used to mist our clothes with water to stop static
charges. A little fabric softener can be added to the water.
However, in the wood shop, low humidity keeps the tools free from
rust. Grounding metal blast gates will help, at least some.
#4 sounds best to me.
"Edwin Pawlowski" <[email protected]> wrote in message
news:[email protected]...
>
> "Doug" <[email protected]> wrote in message
> news:[email protected]...
>> I'm now
>> getting shocks when I touch the blast gates. Can I just hook up a
>> temporary ground to uncharge the system, or something???
>>
>
> Couple of options.
>
> 1. Use a stick to open/close the blast gates
> 2. Have your kids open/close the blast gates
> 3. Run a wire from the PVC to ground
> 4. Have your MIL open/close the blat gates
>
> At work we convey thousands of pounds of plastic material a day through
> PVC. We run wires from it to ground and have no problems. While Option 4
> may be the most satisfying, #3 should work as well.
>