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???
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.
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.
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.)
wrapping the outside DOES take care of the problem. I was having the
same prob. and I wrapped the entire system with thin copper wire and ran
it to ground. Problem solved. No static shocks anywhere on the ducting
or the blast gates.
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,
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