hAyyoUinAU said:I can charge a battery at 800rpm or 200rpm and it will make no difference at all to the output.
Hope this helps.
It will if the load at the time is higher than the IL rating of the alternator ? IL rating and IRA ratings vastly different. One being an idle speed rating the other being a max output at "rated" test speed. A 120 amp alt is it's IRA rating not it's IL rating. It's IL rating may only be 50 amps.
How does it help the original poster? Understanding how something works will give the answer to the question asked
It is what it is, Ohm, Ampere and others sorted it all long before I was around an their intelligence and knowledge goes way beyond mine.