This sounds like a job for a single Apollo T-100. If you do that, Jay, be sure to wire the solar strings with somewhat more than 36 PV cells for every 12 volts of battery.
Jolliness, Mick Abraham, Proprietor www.abrahamsolar.com Voice: 970-731-4675 On Wed, Oct 20, 2010 at 10:00 AM, Kent Osterberg <k...@coveoregon.com> wrote: > William, > > There are some issues with putting the charge controller at the other end of > the feeder: > 1. The advantage of a higher voltage feeder is lost. > 2. The voltage drop in the feeder will mess up the charge controller's > absorption and float set points. Say there is only 1% drop in the deeper, > that's 0.14 volt for a 12 volt system (2x for 24 or 4X for 48 volts). If > the feeder loss is more ... You could raise the set points at the regulator > to offset the feeder loss, but the loss in the feeder is not a constant. > 3. The charge controllers are not NEMA 3 rated, they need to be inside. > > Kent Osterberg > Blue Mountain Solar > > > > > William Miller wrote: > > Jay: > > Bad idea. The differences in tolerances within components will make one > work harder than the other. They will never balance. Why not put the > charge controllers at the other end of the feeder? > > William Miller > > > > At 08:06 AM 10/20/2010, you wrote: > > HI All, > > Say anyone ever paralleled mx/fm-60's? > > I have a unique situation that would be very expensive to pull additional > wire however the existing wire is large enough to need 2 fm-60s' > > If I put a diode between them so they don't feed each other any problems > that anyone knows of? > > thanks, > > jay > > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > > _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
