Alain wrote:
> Orchid XP v7 nous apporta ses lumieres en ce 2007/11/10 12:52:
>> Tim Attwood wrote:
>>
>>>> 2. Is maximum load proportional to diameter or cross section area? 
>>>> (The latter is quadratically propertional to diameter.)
>>>
>>> It's proportional to the surface area. Thus all the stranded and 
>>> braided wire. 
>>
>> Interesting. I thought braided wire was just so it bends without 
>> fracturing...
> A solid wire have a smaler cross section than a braided or stranded wire 
> of the same caliber, but will be stiffer. In a braided wire, there are 
> gaps between the strands, and those make the cable whider.
> So, yes, braided wires are needed when you need a supple wire, like that 
> from a socket to some device. But, a solid wire is beter in a wall, 
> where it don't need to change it's path once in place.
> 
Adding to that, a braided wire might break, but there are enough cross 
connections that under most circumstances you won't notice it. 
Exceptions may be when connected to an amplifier. When I was young (or 
at least younger) we had a, probably cheap, coax cable that connected a 
guitar to an amplifier. If you shook it, you could here the 'water 
sloshing' over the amp. Funny, but not very useful. Another occasion
was when connecting a bush of electrodes to a self made ecg amplifier, 
those wires were long and shielded. Stepping on them would cause 
something that superficially looks like a (part of) a ecg complex, about 
the right amplitude and width. Very annoying if you are looking for 
complexes with a different than standard morphology and have to press 
the record button if you see one and the machine can not be used for a 
minute after you did record that artefact.

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