View Single Post
  #9   Report Post  
Posted to uk.d-i-y
w_tom
 
Posts: n/a
Default bathroom earthing question

First, lightning is completely irrelevant to the OP's question.
Second, leakage currents are irrelevant. That suit of armour puts the
human inside a Faraday cage. Therefore a direct lightning strike that
might kil the exposed human would become not harm the human inside that
conductive armour.

Third, there may be many paths to earth. But when only one has
significantly less impedance (not just resistance) - is electrically a
much shorter path - then a lightning bolt will take only that path to
earth. This is why lightning rods, properly earthed, provide a cone of
protection. This is why long distance transmission lines - the most
likely item to be struck - are at little risk from lightning being
beneath a well earthed catenary wire.

But again, all this is irrelevant to the OP's post about bathroom
safety ground. Note to the OP - bathroom is not earth grounded.
Bathroom grounds are for human safety. Details in another post.

dave wrote:
On 11 Mar 2006 10:45:47 -0800, "Mathew Newton" wrote:
Frankly this is ridiculious. There are such things as "leakage currents" and
even lightning conductors will melt if the pulse/energy duration lasts long
enough. And, there is more than ONE path to earth in the real world.

The leakage current through your suit of armour may well be enough to see you
off. I don't suggest you try it.


I bet you wouldn't be willing to put your money where your mouth is..?