Outer Limits 4x4 Board

I thought this looked useful. I am not sure if anyone has posted one before.

http://www.powerstream.com/Wire_Size.htm

Put in "12V" as the voltage for usual automotive applications... it seems to be fairly helpful. What do you guys think of the numbers it spits out?

Jason

Would be heaps better if it was metric

Also this....

http://www.kilowatts.com.au/calculator-voltage-drop.php

And this.....
http://www.lcool.org/technical/wire_guide.html