Maybe it's just my coffee this AM.
I think I have it now.
Are you talking about 12 L-16s in series times three (12S3P)?
Somehow I missed you were installing 36 batteries. And I thought 40 T-105s was a lot of lead!
I garbled your comment on python wrestling, sorry about that.
You'll find that the Type 3 stranding on BC-5W2 boat cable bends very easily. And it's tinned, with a 105C insulation, too.
-Tom
yahoogroups.com, Ben Okopnik <ben@...> wrote:
>
> Hi, Tom -
>
> On Fri, Jun 24, 2011 at 03:04:06PM -0000, Tom wrote:
> > Hi Ben,
> > If you're still talking about using 12 L-16s in series, then you'll need to size the 72' cables much larger than 2 AWG to keep the voltage drop at 180 amps within reason.
> > No room in a 45 foot boat to run bigger cable? Sounds like you 'll need a bigger boat!
>
> I was obviously not very clear in what I wrote; sorry about that. The
> batteries would obviously be connected in series/parallel; if I have a
> third of them split between port and starboard and connected in parallel
> to the other two-thirds, the current being drawn from that remote bank
> is going to be about 1/3 of the total - i.e., about 60A of the total
> 180. In addition, the total length of the cable involved is 72'; that's
> four pieces (two negative and two positive runs to the split "remote"
> bank) of 18' each, so #2 should work very well; it's about 70% bigger
> than the nominal size for that current and length.
>
> Oh, and I didn't say I don't have the room - I do indeed, lots of it;
> it's just that bending #2 cable around corners is not the easiest job in
> the world. I might just go with welding cable, which is nice and
> flexible.
>
>
> --
> Ben Okopnik
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> "Somebody has to do something, and it's just incredibly
> pathetic that it has to be us."
> -- Jerry Garcia (of the Grateful Dead)
>
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