I love this statement I found when trying to find the amperage equations.

----The following information may have errors; It is not permissible to be
used by anyone who has ever met a lawyer. Use should also be confined to
Engineers with more than 370 course hours of electronic engineering and
should only be used for theoretical studies.----

BTW the reason I was looking for the tables was some suspicions on the
starter cable on the vanagon may actually be undersized for voltage loss.
As starters age this can become critical.  At 200 amps it is undersized. At
175 amps it is okay.

This means at zero degrees F.  your battery is already weakened, your engine
is harder to turn over (higher current needed), starter is about worn out
(needs more current), and you have a 8 percent drop in the cable.

Sounds big but when you consider what the increased load on everything else
is, the cable voltage drop is nothing in the total loading.  Cleaning the
battery terminals would have more effect.

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jimt
Planned insanity is best.
Remember that sanity is optional.
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