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Hi all, I'm currently doing an RX7 70amp alternator conversion but I'm a bit confused over what size wire to use for the B post. It seems common sense to use the larger 70amp battery wire but I can't seem to find a way to connect it to the B post on the alternator. The bolt on battery style ends are just too large to fit. Looking on my sisters Nissan, the 65 amp alternator fitted there only has a small wire (about 40amp wire) running from it. This seems to be how my Mazda/RX7 alternator was designed considering the small terminal post. I've got some 40amp wire that looks about the same size as the original wire in the VW harness, can I use that and run it straight to the battery? Does it need to be fused at all? Looking at the Jap diagrams, they seem to run through a 'fusible link' on the + side, how do the fusible links differ from the regular fuses/fuse boxes? Sorry for all the q's, wiring really isn't my forte! :-) cheers, Dan ---- On Wed, 2005-03-23 at 04:42, type3-d-request@vwtype3.org wrote: ________________________________________________________________________ > From: Jim Adney <jadney@vwtype3.org> > To: type3@vwtype3.org > Subject: Re: [T3] DBB alternator > Date: Tue, 22 Mar 2005 22:38:50 -0600 > > > On 22 Mar 2005 at 15:43, Toby Erkson wrote: > > > I'm not sure if that stock wire should be used as it was designed to > > carry 360watts, not 840! > > The wire rating would be in Amps, not Watts, and I think the OE wire is > significantly larger than the 30A rating of the generator would suggest. It's > probably good for 40A, but certainly not for 70A continuously. > > OTOH, I can't imagine a situation where it would ever be called on to carry 70A > continuously. > > Where I work, we commonly put 400 A thru 12 gauge wire and 50 kA thru 4/0 > cable. It works just fine, but that's only because the current is there for > only about .050 seconds every 3 minutes or so. > > -- > ******************************* > Jim Adney, jadney@vwtype3.org > Madison, Wisconsin, USA > ******************************* > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~