On 1/9/22 8:22 PM, Jim Brown wrote:
On 1/9/2022 4:48 PM, David Gilbert wrote:
That's a different situation, of course, but certainly very true. I
bet lots of people have multiple grounds connected to their homes,
and most don't realize they do or the potential effect of it. I've
seen internet providers stake their own ground because the egress for
their equipment was too distant from the utility service entrance.
Then you get TVs and computers connected to different ground
potentials in the case of nearby lightning hits.
Electrical Codes adopted throughout North America carry the force of
law. Virtually all include a requirement that all earth connections in
a premises be bonded together, with certain exceptions for separate
buildings. Lots on my website about that.
Over several years after moving in, I found some real horror stories
in how this was not done in the home I bought when I moved here in
2005. Not even the craziest thing was that the required earth
connection for the electrical service was to a nearby outlet for a
garden hose, which was fed by PVC pipe.
There are multiple websites with examples of poor "earthing" on
satellite TV, cable TV, and telco installations.
Out at the barn where I used to keep my horses, the telco guy just drove
a new rod at the demarcation point (on a fence 50 feet away from the
nearest building).
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