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Old 04-20-2013, 01:00 AM   #7 (permalink)
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Good enough for lead

Originally Posted by RobW View Post
...using 72 volt system... Do any of you see any problems with using this cable if it turns out to be 1/0 cable?
Listing a few assumptions, mostly repeated from the other posts:
- Worst case is that the batteries are connected to the controller with bus bar, and that the cables from the controller to the motor are 20 feet long so the 1/0 motor cables see 500A for the longest time
- 500 amps peak (that's all the ReVolt will put out, right?) on 20 feet of 1/0 is about 2.5V of voltage drop, just over 3%
- The lead batteries won't supply that amount of current for long, so the cables won't be dangerously overheating. They may get warm to the touch!

I would have no concerns with the wire size if it were my project.
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