Subject:
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Re: Metroliner question
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Newsgroups:
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lugnet.trains
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Date:
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Fri, 22 Feb 2002 03:16:48 GMT
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Viewed:
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877 times
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You may be correct, as I really have never seen or studied the systems of
which we are referring. My aspects were only mere assumption. I base my
hypothesis on a bit of history from the Edison era. In his thriving days of
supplying power to the masses for their new lights and such, he had to
supply DC power in great amounts - which was very dangerous and did kill
people. Now, a man with the last name Westinghouse realized that this was a
problem and to make a long story short, started suppling the world with AC
power to the world. AC power is more efficient and can travel longer
distances, therefore requiring less voltage. (or something like that.)
Sorry for going off on a tangent; just the electrician coming out in me.
-Rob
"William R Ward" <bill@wards.net> wrote in message
news:m24rka8e5i.fsf@komodo.home.wards.net...
> "rhendrix" <rmhendrix@hotmail.com> writes:
> > Lar, I would imagine that the busses are using A/C power which wouldn't
> > require an abrupt change in current flow as a DC circuit would in the
> > reversing loop (as long as phase A and phase B are open in the same • exact
> > place). That way, the bus would only lose power for a split second • before
> > it made contact again.
>
> Well, the electric buses in San Francisco share one of their wires
> with the historic trolleys along Market St. I'm pretty sure the
> trolleys are D/C, or the tracks would represent a shock hazard, yes?
>
> --Bill.
>
> --
> William R Ward bill@wards.net • http://www.wards.net/~bill/
> -------------------------------------------------------------------------- • ---
> If you're not part of the solution, you're part of the precipitate.
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Message has 1 Reply:
 | | Re: Metroliner question
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| (...) High School Physics: To get the same efficiency from DC, we'd literally need a power station in every district of a city/town. Despite that, AC power distribution is High Voltage/Low Current (was DC the same?) as this ensures low power losses (...) (23 years ago, 22-Feb-02, to lugnet.trains)
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Message is in Reply To:
| | Re: Metroliner question
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| (...) Well, the electric buses in San Francisco share one of their wires with the historic trolleys along Market St. I'm pretty sure the trolleys are D/C, or the tracks would represent a shock hazard, yes? --Bill. (23 years ago, 22-Feb-02, to lugnet.trains)
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