FDR wrote:


"w_tom" wrote in message
...
running dogg demonstrates why these pictures of the 'primary
protection' system require inspection:
http://www.tvtower.com/fpl.html

A household earth ground (another earth ground) is essential
also for human safety. The neutral wire failed inside a
transformer. Building's earth ground had been compromised.
But since the lights still worked, the homeowner did nothing.
To transport electricity back to the defective transformer,
the house use a natural gas line. Fortunately no one was home
when gas line gaskets finally failed at the meter; the house
exploded.

If that doesn't souind like an urban myth....

Yeah, it does to me too. I doubt that electricity would be transported
back to a transformer via natural gas line. Natural gas is awfully
volatile. Also, if the neutral wire INSIDE one of those huge oil filled
transformers up on a pole failed, how would the homeowner know, much
less act? I suppose that an arcing transformer would cause horrible SW
interference (not sure about MW) but most people don't have SW radios.
In that case only a local SWL or ham would notice.

All new construction around here requires 400 amp household grounds
built into the foundation. Typically the special ground rod is simply
stuck into the concrete. I think it should be actually buried in the
earth, but apparently that's not necessary. Fortunately lightning storms
are rare here, and when they DO happen they're rarely on the scale seen
in Florida. (I never understood why people think Florida is paradise;
they have some NASTY weather there and some really, really bad urban
ghettoes.)



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