For us safety nerds, grounding provides an equipotential environment,
which means no current through the body. And, the grounding circuit
provides a return path for fault current. We don't pay attention to
Gnd0, Gnd1, Gnd2, Gnd-Iso, etc.; for safety purposes, they are all at
the same potential -- ground. While Gnd-Iso may not be at ground
potential, current from Gnd-Iso to ground should be inconsequential.
So, for us safety nerds, "ground" is our (lazy) way of referring to an
equipotential environment.
Best regards,
Rich
On 7/13/2019 2:31 PM, Doug Powell wrote:
This is purely speculation on my part but it seems to me that the
single syllable "ground" is a lazy way of referring to anything that
is a common return line, whether bonded to earth or not. I've seen
circuits with references to Gnd0, Gnd1, Gnd2, Gnd-Iso, etc.
Of course, this shorthand way of referring to circuits does cause a
lot of confusion. And, I personally classify this as falling into the
same category as when people with an inexperienced eye say this bit of
failed electronics "/must have a short somewhere/" .
Doug
--
Douglas E Powell
[email protected]
https://www.linkedin.com/in/dougp01
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