> button. It was a "hit the button while peaking around the corner" type
of
> experiment. We were able to draw about 2000 amps momentarily on the
> secondary which really made a set of welding cables jump.
>
> In my experience, a single conductor doesn't need any other conductor
near
> it to display mechanical force when high current is applied. The self
> inductance of the cable and resulting cemf produce sufficient magnetic
> reaction to make the cable jump if it is not secured. Very interesting
to
> look at the Z of a 4/0 welding cable...
What is the temperature rise in the cable at such high currents? Could
not a
sudden rise cause the metal to expand and at least explain some of the
movement?
73
John Morrow Gi4ksh
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