Em 15/9/2011 06:59, Electron escreveu:
> At 02.30 2011.09.15, Oli Glaser wrote:
>> On 14/09/2011 09:19, Electron wrote:
>>> Very interesting. What is the minimum current to actually feel the line=
?
>> About 0.5mA at 60Hz.
> Well, then 230V RMS is 650V peak to peak


Nope, the peaks (positive or negative) happen at different times. The
maximum instantaneous voltage between line and neutral is half that.


>  it means 1.3 Mohm, but why does one
> gets a shock even when he uses shoes.. if I measure my resistance to eart=
h in
> such a situation, it will be in the gigaohm side.. does it mean that e.g.=
 wood
> shoes have a low breakdown voltage? Only that can explain it, I think.


Resistance of some materials is not linear with voltage. As you guessed,
breakdown voltage plays its role there. Perhaps not of the rubber
itself, but of impurities and contaminants on the surface.


Isaac

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