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Subject: Re: American vs foreign electrical parts and installations
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Date: Tue, 17 Sep 2002 11:30:22 -0230
NNTP-Posting-Date: Tue, 17 Sep 2002 10:02:06 EDT
Organization: Bell Sympatico
Gary Tait wrote:
> On Sun, 15 Sep 2002 20:32:27 -0230, Terry
> >Maybe in twenty years time even our electric power will be
> >delvered by an optic cable???? Don't stand near the end of that
> >cable ..... Zap!!!! :-)
> I doubt it. I mean you may find copperless utilities, if
> Fuel cells take off, as you can supply them from Natural Gas.
> There is no way you can supply a consumer usable light source on
> optical fiber.
Gary: I agree. But was just trying to get a reaction!
Regarding 'Joint Use' of facilities. Here poles lines are often
used to convey utilitiies; AC distribution, typically at around
13 kilovolt 3 phase, multipair telephone and/or optic fibre
cables and cable television using coax and fibre optic cables.
These three separate companies sharing the poles also supply the
various internet services either over the copper telephone pair
at frequencies above the normal telephone, or over the same coax
cables that supply TV channels. Despite our climate one advantage
of overhead is that down time, except in the case of a very
severe ice storm that brings down many poles, and even then, is
that restoral time is fast. Pole mounted distributions
transformers for example can be replaced over night and even
ground mounted ones can be replaced by a towed in substitute on a
trailer. There is a lot of electric home heating so continuity of
service is important.
Our utilty companies do a very good job.