John, 1/8 x 3/4 would probably be enough. That's almost the same cross-sectional area as 2/0 cable, which handles 400A just fine. 3/16 x 3/4 would make you plenty safe.
Those are generalities. Your situation might dictate a different solution. If you're making a bazillion short jumper bars the length is inconsequential in your calcs. In that case, any more cross-sectional area than the contact area of your posts is probably a waste. You would also want to make sure your modules are mechanically held together by some means other than the bus bars. I'm guessing the Leaf has them rigidly mounted with respect to each other, with zero load on the posts. If true you should do the same. If you don't, the modules will move around and cause damage. And of course you'll want to tin or solder-dip the bus bars. If it was me I'd consider doing what Bill Dube did on Killacycle. Lots of short lengths of tinned braid. Feed each end into a short length of copper tube, swage flat and punch your bolt hole through the tube and braid. Good luck, Chris On Sun, May 4, 2014 at 5:14 PM, John Lussmyer <cou...@casadelgato.com>wrote: > So, I'm updating my F250 to use Nissan Leaf modules. > 3 modules in parallel, 40 sets in series. > Trying to figure out bus bar size I'll need. > Truck cruises at 60mph, at about 125A. The 2 mile steep hill from the > ferry will probably be more like 400A (possibly more.) > Would 3/16"x3/4" be big enough? > > -- > Tigers prowl and Dragons soar in my dreams... > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > For EV drag racing discussion, please use NEDRA ( > http://groups.yahoo.com/group/NEDRA) > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140505/13dfc113/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
