kilopascal wrote:
....
> In addition, a copper wire is run from the fuse box neutral post to the
> water pipe inside the house. At least here in Cleveland it is. ...
I believe that this is no longer allowed under the National Electric
Code. The problem is that there may be a stretch of piping that is made
of non-conducting materials before the cold water service reaches
effective ground. In these days of plastic piping, that's a very real
concern. I don't have a copy of the NEC handy to check this, though. At
the time you repaired that lady's ground connection, it was probably
legal though.
And that mention of standards brings us back to the topic of SI and its
use in the US. I still see many, many instances of pre-SI usage
continuing in use. A few are "authorized", such as the liter. But many
are deprecated, such as the calorie (in its many sizes). Now, as the US
moves more quickly toward metrication, we need to help people come to
realize that "old metric" is no longer appropriate. We can start with
the American astronomers, as far as I am concerned!
Jim
--
Metric Methods(SM) "Don't be late to metricate!"
James R. Frysinger, LCAMS http://www.metricmethods.com/
10 Captiva Row e-mail: [EMAIL PROTECTED]
Charleston, SC 29407 phone: 843.225.6789
