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Old 02-03-2010, 02:39 PM   #18 (permalink)
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Originally Posted by RobertSmalls View Post
12kW at 13.8V is 870A. That's going to require some awfully large cables, terminals, and fuses. Why don't high-end audio systems go high-voltage? The same 12kW load at 120V is only 100A, a much more manageable current.
They're probably running them at 16V, granted it's not much of a change, though. Keep in mind, they've probably got several amplifiers daisy-chained, rather than one huge 12kW amp, so there's a good chance that there's a normal sized wire coming from each of the alternators to a bank of batteries, and normal wiring between the batteries going to each amplifier.

Keep in mind, by normal, I mean entrance cable.

Really, though, probably something between 4g alt wire and 0 or 0/0 for the battery cables and maybe 2g for the amp power supplies.

I can't imagine the heat generated in that setup...
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