~e; Fwd: Electrical Wire Safety
brian carroll <firstname.lastname@example.org>
Fri, 12 Mar 2004 13:02:58 -0600
forwarded with permission:
> From: fred bucheit <fbucheit (at) HOTMAIL.COM>
> Date: Thu Mar 11, 2004 6:44:21 PM US/Central
> To: PHYS-L@lists.nau.edu
> Subject: Re: Electrical Wire Safety
> Reply-To: Forum for Physics Educators <PHYS-L@lists.nau.edu>
> The voltage in the power grid is likely to vary with time
> because the
> load on the system varies and the power company can't anticipate it.
> But, I
> wonder if they sometimes boost the voltage a bit just to sell more
> energy. A
> few volts can probably mean millions of dollars of increased income.
> It is interesting to note that the power companies decided long
> ago to
> make the system a grounded system. That is equivalent to making the
> earth one pole of the generator. (they run a wire from one pole deep
> the earth). If they had not done that, thousands of lives would have
> saved over the years. If they had not done that, you could stand on the
> ground and reach up with an aluminum ladder or a metal pipe or even a
> kite string and touch the high voltage lines and you would not get an
> electrical shock.
> They put isolation transformers on pool lights for safety. If they
> away with the grounded system, it would be the same as providing our
> with an isolation transformer....and many lives would be saved.
> Fred Bucheit retired...
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