Re: static free work area



Tom, I actually believe what I know he means by "...the copper wire
that go to my fuse box.." As you have posted, a cold water pipe is
USUALLY the best ground connection, unless you live in New England,
where the water service from the street arrives via PVC or HDPE pipe.
As it turns out in my home, the copper pipe on my water service was
actually eaten away by the electrolytic currently flowing through the
water, becasue the main feed from the street was some form of plastic
pipe.

After replacing roughly 15-feet of 3/4" copper pipe that over the years
had turned to tin foil thickness and developend pinhole leaks
throughout its length, I replaced it. I next drove a ground stake
through a hole drilled through the cellar floor and connected it to the
water distribution system using a short length of #1 stranded copper
wire. End of problem!

While I certainly would not want to work with potentially explosive
compositions in my basement, I commonly do with far more ESD sensitive
electronics components and computers. For this purpose, an anti-static
strap connected to ground through a suitable resistance and shoved
under the wrist band of my watch works just fine, even when only
connected to the VERIFIED ground on a nearby electrical outlet. As you
point out, the most important factor is to assure you and the thing you
are working with are at the same potential. That's where the conductive
and grounded workbench surface becomes important.

In the past when I've had to do work in the field, just grounding
yourself by touching the metal chasis of the equipment you are working
on is usually sufficient. Still, when working with explosive materials,
it is wise to not take chances and follow all the rules, because your
first mistake could be your last!

Kindest regards, Harry C.

p.s., Even though my computer is in the basement, I always ground
myself by touching a large, nearby metalic object like a file cabinet,
before laying hands on the computer keyboard! :-) Sometimes I get a
spark, sometimes not, but I always follow the same pattern or protocol.

.



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