Rewiring the array is not that hard. Why is he against that? With old
Jbox type modules, it usually is safer too, as those often were
paralleled at the modules, and often over loaded the connectors. It
would also increase his total power output by reducing line losses. I
think a careful inspection of the old array wiring will reveal it needs
rewiring anyway. Folks always blamed lightning for cooked connectors,
when the real culprit was over paralleling. I've seen the connections
get so hot (4th module in parallel) that the j box was melted.
Ray Walters
Remote Solar
On 5/7/2024 1:09 PM, Andrew Perkins via RE-wrenches wrote:
Sorry yes for clarification that he wants to parallel the INPUTS I am
aware of paralleling the outputs we do that all the time. Sorry for
the confusion but seems like the census now says NO on paralleling the
2 inputs from one array.
Andrew Perkins
Greenwired
P: 707-923-2001 ext. 100
1150 #1 Evergreen Rd
Redway, CA 95560
www.greenwired.com <http://www.greenwired.com>
---- On Tue, 07 May 2024 11:58:37 -0700 *Howie Michaelson via
RE-wrenches <[email protected]>* wrote ---
Yes, output not input. Thanks for clarifying that William...
Howie
*Sun Catcher**/
/**
****Solar Electric Systems Sales & Service
802-272-0004*
On Tue, May 7, 2024 at 2:55 PM William Miller via RE-wrenches
<[email protected]> wrote:
Andrew:
I see no problem paralleling the Charge Controller outputs but
I would not parallel the inputs. With parallel inputs, unless
there is protection to prevent excessive current, there is a
risk that one CC will take over and try to regulate the entire
array.
I suggest you divide up the panels to create one appropriately
sized discrete array into each CC. You can parallel two
strings of panels without OCPD.
William
Miller Solar
17395 Oak Road, Atascadero, CA 93422
805-438-5600
www.millersolar.com <http://www.millersolar.com/>
CA Lic. 773985
*From:*RE-wrenches
[mailto:[email protected]] *On Behalf
Of *Andrew Perkins via RE-wrenches
*Sent:* Tuesday, May 7, 2024 9:24 AM
*To:* Re Wrenches
*Cc:* Andrew Perkins
*Subject:* [RE-wrenches] PWM Controllers in parallel
Hello Wrenches,
I have a client who has a large 2000 watt 12v array
that he said used to be hooked into an internal solar charger
on his old trace. Never seen a trace with one of those in it
but he claims it could do 200a. This internal charger has now
died and needs a replacement. He is refusing to rewire his
panels into a new configuration and their aren't many options
for him out there. I did get him a Coleman Aire 400a Charge
controller but it is more of a load controller and wants to be
able to properly absorb is batteries off the sun. He currently
has a c60 running only part of the array and now he is asking
about running another c60 in parallel. Not quite sure if this
would work or not but my gut feeling says no and there will be
problems.
If anyone knows of any controllers that would fit that or if
running those in parallel works your advice would be greatly
appreciated.
Andrew Perkins
Greenwired
P: 707-923-2001 ext. 100
1150 #1 Evergreen Rd
Redway, CA 95560
www.greenwired.com <http://www.greenwired.com>
_______________________________________________
List sponsored by Redwood Alliance
Pay optional member dues here: http://re-wrenches.org
List Address: [email protected]
Change listserver email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
There are two list archives for searching. When one doesn't
work, try the other:
https://www.mail-archive.com/[email protected]/
http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
List rules & etiquette:
http://www.re-wrenches.org/etiquette.htm
Check out or update participant bios:
http://www.members.re-wrenches.org
_______________________________________________
List sponsored by Redwood Alliance
Pay optional member dues here: http://re-wrenches.org
List Address: [email protected]
Change listserver email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
There are two list archives for searching. When one doesn't work,
try the other:
https://www.mail-archive.com/[email protected]/
http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
List rules & etiquette:
http://www.re-wrenches.org/etiquette.htm
Check out or update participant bios:
http://www.members.re-wrenches.org
_______________________________________________
List sponsored by Redwood Alliance
Pay optional member dues here:http://re-wrenches.org
List Address:[email protected]
Change listserver email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
There are two list archives for searching. When one doesn't work, try the other:
https://www.mail-archive.com/[email protected]/
http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
List rules & etiquette:
http://www.re-wrenches.org/etiquette.htm
Check out or update participant bios:
http://www.members.re-wrenches.org
_______________________________________________
List sponsored by Redwood Alliance
Pay optional member dues here: http://re-wrenches.org
List Address: [email protected]
Change listserver email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
There are two list archives for searching. When one doesn't work, try the other:
https://www.mail-archive.com/[email protected]/
http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
List rules & etiquette:
http://www.re-wrenches.org/etiquette.htm
Check out or update participant bios:
http://www.members.re-wrenches.org
