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Old 09-05-2014, 08:40 PM   #65 (permalink)
e*clipse
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Exactly!

I think that's why ORNL did the coercivity tests first. Although some of their tests involved sawing things in half, so they probably weren't as concerned about breaking stuff as we are.

The other thing that got me is that 250A/ 12 wires = 20A through a 0.032" diameter wire! This is more than 2X as much as the maximum NEC ampacity rating. I'd like to know how long they left the current on to do the tests. I mean, if they did the tests in 15 seconds, that's easily enough time to max out the speed this motor will push a car.

They did note that these currents were only possible for a very short amount of time. They specifically warned that the wires were bundled within materials that couldn't dissipate the heat very well.

- E*clipse

Quote:
Originally Posted by Cobb View Post
Wow, careful not to wipe the charge from the magnet.
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