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| On Fri, 23 Jun 2006 06:27:03 GMT, Roy L. Fuchs wrote:
< big snip >
>
> No. In a PEOPLE contact comparison.
Well, bare wire == people contact is highly likely. Probability of
contact is a thing that _should_ be factored in, when talking about
safety!
>
> No, it isn't. The only factor in the subject you are begriming to
> expound on is CURRENT, not voltage.
As a certain Georg Ohm discovered ages ago, voltage and current are
correlated.
And 42 is not only the answer to life, the universe and everything, it's
also generally regarded as THE voltage limit, where human contact won't
result in a lethal current in ANY circumstance. With everything over
42V, _avoiding_ contact should be the #1 priority!
>
> I can touch 120.
If that isn't 'complacency' spelled out in 400 point, all-caps, bold and
double underlined...
> I would not touch 240.
You should ;-)
From my experience, 230/240 feels like a much better 'wake-up call'
Remember: Electricity doesn't kill people, complacency does!
> You have you analyses screwed up.
ditto
>
> Since they aren't using teflon wire, I'd say that 4kV is a bit
> high. Also matters if it is AC or DC.
Uh, last time I've checked, this was an EE group. I find the lack of
basic knowledge on insulation testing disturbing.
Designing an appliance to withstand a 4kV insulation test doen't require
magic, nor exotic materials. Using at least two layers of insulation
(which could be anything, including air) and ensuring sufficiently long
current creep paths everywhere, does.
But that's obvious to everyone who has read the EN60065 code for 230V
appliances...
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