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On 09/07/09 02:24, scott wrote:
>> Does voltage even matter in this case? Isn't amperage the important bit?
>
> The current (amperage) in the cable is pretty meaningless if we're
> talking about accidents when someone or something touches the cable.
> Whether there is zero or ten million amps going along the cable, when
> you (or some object) touches it, it is the voltage of the cable that
> will determine the severity of the outcome.
Not really. It's also the amount of available charge. If you get a 10
kV shock, but the supply had very few Coulombs in it, you'll barely feel it.
But if you get a 100 V shock with an almost limitless supply of
Coulombs, you certainly will feel it, and in rare occasions, die because
of it.
Current *is* a factor. Certainly: Voltage will dictate an upper bound
on the current. However, if there's not enough charge to maintain that
upper bound, then voltage becomes irrelevant because it can't sustain
that current.
--
"I find you guilty!", said the judge with conviction.
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> Not really. It's also the amount of available charge. If you get a 10 kV
> shock, but the supply had very few Coulombs in it, you'll barely feel it.
I was kind of assuming that the power station grid could spare the extra 100
mA or so needed to kill you :-) But yes, if you find a 10 kV supply with
very limited current sourcing capability (like the ones used in small CCFLs
in old LCDs) it's difficult to kill yourself because of the very limited
current sourcing capability.
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scott wrote:
> http://img1.photographersdirect.com/img/11943/wm/pd540134.jpg
A lot of that is phone wires, yes.
> I guess once you start putting power and telephone above-ground, things
> get very messy very quickly in heavily populated areas.
Only when it's poorly planned. You can have nice above-ground stuff that
just has one set of power cables and one set of phone cables running down
the street and branching once for each house.
--
Darren New, San Diego CA, USA (PST)
I ordered stamps from Zazzle that read "Place Stamp Here".
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Darren New wrote:
> Only when it's poorly planned. You can have nice above-ground stuff that
> just has one set of power cables and one set of phone cables running
> down the street and branching once for each house.
>
>
As with almost all things, a lack of planning can lead to "ugly", or
poor functionality.
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Mr. Art wrote:
> As with almost all things, a lack of planning can lead to "ugly", or
> poor functionality.
Of course, planning well can be difficult when you're trying to guess the
best technology for 50 years in the future, or when you're trying to guess
how many customers will be using your service in 30 years, or etc. It's
hard to blame the planners for this sometimes.
--
Darren New, San Diego CA, USA (PST)
I ordered stamps from Zazzle that read "Place Stamp Here".
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Darren New wrote:
> Mr. Art wrote:
>> As with almost all things, a lack of planning can lead to "ugly", or
>> poor functionality.
>
> Of course, planning well can be difficult when you're trying to guess
> the best technology for 50 years in the future, or when you're trying to
> guess how many customers will be using your service in 30 years, or
> etc. It's hard to blame the planners for this sometimes.
>
Who said anything about blame?
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Mr. Art wrote:
> Darren New wrote:
>> Mr. Art wrote:
>>> As with almost all things, a lack of planning can lead to "ugly", or
>>> poor functionality.
>>
>> Of course, planning well can be difficult when you're trying to guess
>> the best technology for 50 years in the future, or when you're trying
>> to guess how many customers will be using your service in 30 years, or
>> etc. It's hard to blame the planners for this sometimes.
>>
> Who said anything about blame?
Me.
--
Darren New, San Diego CA, USA (PST)
I ordered stamps from Zazzle that read "Place Stamp Here".
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Chambers wrote:
> Mike Raiford wrote:
>> I don't recall the monolith being on the moon... Then again, I have
>> slept a few times since seeing the movie, so maybe I'm wrong.
>
> That was actually the whole point of the section between the Apes and
> Discovery.
Now I'll have to watch it again... agh.
--
~Mike
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Mike Raiford wrote:
> Chambers wrote:
>> Mike Raiford wrote:
>>> I don't recall the monolith being on the moon... Then again, I have
>>> slept a few times since seeing the movie, so maybe I'm wrong.
>>
>> That was actually the whole point of the section between the Apes and
>> Discovery.
>
> Now I'll have to watch it again... agh.
>
Is that a bad thing? :)
...Chambers
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Chambers wrote:
> Mike Raiford wrote:
>> Chambers wrote:
>>> Mike Raiford wrote:
>>>> I don't recall the monolith being on the moon... Then again, I have
>>>> slept a few times since seeing the movie, so maybe I'm wrong.
>>>
>>> That was actually the whole point of the section between the Apes and
>>> Discovery.
>>
>> Now I'll have to watch it again... agh.
>>
>
> Is that a bad thing? :)
>
> ...Chambers
Not at all, but lamenting my failed memory...
--
~Mike
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