Even with battery balancers, battery tapping is still a really bad
idea. I know, I did it on my own system in the 90s. The DC/DC
converters are the way to go, but be sure and over size it by a fair
amount to handle the fridge starting surge. Unfortunately my favorites
are no longer available: made by Solar Converters in Canada. I've seen
them last decades. Iota should be good stuff, their chargers have long
term reliability. Samlex inverters have been around for quite a while
too, but I don't have long term experience with their converters.
Ray Walters
Remote Solar
303 505-8760
On 12/31/19 10:05 AM, Dave Angelini Offgrid Solar wrote:
Tapping a battery bank is not a good practice. it will unbalance the
bank. Much better to add a 24V electronic converter for the 12V loads.
Then replace the 12V loads when time permits. They will need a spare
converter so buy 2. Amazon has tons of these converters. Your quote is
great BTW. H N Y !
*Dave Angelini Offgrid Solar "we go where powerlines don't"
http://members.sti.net/offgridsolar/ e-mail offgridso...@sti.net
<mailto:offgridso...@sti.net> text 209 813 0060*
On Tue, 31 Dec 2019 11:52:20 -0500, Chris Schaefer
<ch...@solarandwindfx.com> wrote:
G'day and Happy New Year to All,
Recently came across this offgrid OB FX system. The first part is a
12v battery system w/ 2 PV modules, 2 Trojan L16 batteries used to
power a frig and freezer about 6 years old. The second is a 24v with
3kw of PV, 4 Trojan L16's, twin OB FX inverters installed by an HVAC
contractor back in 2016. This was their first offgrid project. Oh
boy, lol. The client would like to add more battery capacity to both.
My thought here is since we are powering only a 12v frig and freezer
why not simplify the system by creating a single battery bank and
then tapping off of the 24v bank using proper fusing and creating a
12v buss? Admittedly I live in a 48v world so I'm asking our esteemed
colleges as to options on how to address this.
Oh yeah, the installer is unresponsive (no surprise there) and they
are also having firmware issues with an old Mate 3 and would like me
to install a new Mate 3s but that's another issue I'll tackle when I
head out to site.
Thanks All,
Christopher-
Chris Schaefer's
<http:www.solarandwindfx.com>
/Tel/Fax 585-229-2083 or Cell 585-748-1870
//5115 South Hill Road ~ Canandaigua New York 14424
//www.solarandwindfx.com <http://www.solarandwindfx.com> ~ E-mail:
ch...@solarandwindfx.com <mailto:ch...@solarandwindfx.com>/
/
/
Thomas Jefferson, the author of our great Constitution, once said,
"democracy" will cease to exist when you take away from those who are
willing to work and give to those who would not."
--
_______________________________________________
List sponsored by Redwood Alliance
List Address: RE-wrenches@lists.re-wrenches.org
Change listserver email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
List-Archive:
http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html
List rules & etiquette:
www.re-wrenches.org/etiquette.htm
Check out or update participant bios:
www.members.re-wrenches.org
_______________________________________________
List sponsored by Redwood Alliance
List Address: RE-wrenches@lists.re-wrenches.org
Change listserver email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
List-Archive:
http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html
List rules & etiquette:
www.re-wrenches.org/etiquette.htm
Check out or update participant bios:
www.members.re-wrenches.org
