On 13/09/2011 13:53, Electron wrote:
> Hi!
> can a 1 mm2 conductor carry thousands of amperes for very short times? (u=
S or less)
>
> I mean, is there an intrinsic limit, other than temperature (which for pu=
lsed operation
> if the average is low, should not pose problems) and of course Joule effe=
ct (I^2*R)?
>
> Greets,
> Mario
>
Skin effect, capacitance and inductance.

So length of cable, placement, return wire and voltage are all=20
significant too.

Even a not very long wire will limit current of 1uS pulses due to=20
inductance and Skin effect.

It's the I^2^R that melts or evaporates  the wire. Easier the shorter it=20
is, assuming supply wires are much larger.
--=20
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