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Date: | Fri, 25 Jul 1997 10:24:58 -0400 |
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Yes, if it was my decision to make, I would.
An electrical ground is simply the building ground with
very little resistance. In other words, if one were to
measure electrical ground between two points anywhere
in your building, the measurement would/should be in the
ohms or 1/10 of ohms - very low.
When any amount of charge is discharged to electrical
ground, the discharge current is high and damaging.
There is no resistance to limit the current. Charge that
has built up on some assembly, even a small amount,
would damage the assembly being discharged.
On another note, it's also essentially unsafe. If there was
ever the possibility that someone grabbed something
hot with 120 vac line voltage and were grounded to
electrical ground with simply some wire, the result
would be ... well, take it from there.
ESD ground on the other hand has a high resistance
to it up in the Meg ohms. This allows safe discharge
currents from electronic assemblies. It is also safe
with someone grabbing AC by accident in the sense
that it should allow one to release their grip on the
live wire. I believe the upper limit for voluntary release,
the maximum current where you can let go of something
hot, is roughly 5 milli-amps through your muscle and
is dependent upon many factors. Above this point,
you can't release your grip. I could be off on this one
but I think I've made my point -
People safety first,
then product safety second.
Never reverse it.
Flooring can be made into ESD ground in a number
of different ways depending upon the necessity -
from leaving the floor as bare concrete, to conductive
paint, to conductive tiles. You'll need to contact
a consultant preferably someone not selling a
specific product, or read up on this topic.
I would recommend that you thoroughly research
the subject of ESD before you make any decisions
for your specific situation.
And please, keep it safe.
Regards ...
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