> The trick is getting it nicely > calibrated, 1 mV/A would be ideal.
Not ideal, really, in that you lose an entire volt at 1000A, but that might be tolerable. Your shunt needs to be physically larger so it won't vaporize as it dissipates the 500*500*0.001=250W of a 500A load. There's a reason a 1W resistor is a lot larger than the usual 1/4" resistor. Plus, copper has a noticeable temperature coefficient, if it gets dramatically hot its resistance will change enough to skew your results some. Much longer wire of the 12ga or 10ga persuasion would survive a lot better. Consider the lowly toaster rack of the series glow plug system. It's only drawing about 50-60A and look at how big it is. (It's iron wire, though. Not copper, anyway.) -- Jim _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
