[RE-wrenches] Two MPPT Charge Controllers, One PV Circuit

[Dave Angelini Offgrid Solar]

 It is against code if you do not follow installation instructions from
Schneider or the manufacturer. This really a bad way to get a max harvest
also. 

I am curious how it is working? 

The safety part is a bit of a
puzzle but it is unintended to run this way. That in itself could be
dangerous as the failure mode might not have been tested for this. I tested
the -80-600 volt mppt here for them and have no recall of this concern. 

Dave Angelini Offgrid Solar
"we go where powerlines
don't"
http://members.sti.net/offgridsolar/ [1]
e-mail offgridsolar at sti.net
[2]
text 209 813 0060

On Thu, 7 Nov 2019 14:45:35 -0500, Matt Sherald 
wrote:   Hi All,   I recently posted a request for suggestions regarding a
600Vdc xfer switch. In the intervening time, I've been out to visit and
review the system in question and found that the original installer had
been called back and had added a second XW MPPT 80.   The installer did not
run separate strings to each of the two MPPTs, but instead they split the
PV output circuit with split bolts and now feed the two MPPTs from this
splice. A Schneider tech whom I spoke with said that this was a safety
issue, but was unable to clearly explain why it posed a danger. Can anyone
lend some insight? I can imagine how the MPPT function might be skewed, but
the wire size of the feeders are adequate for the combined current of the
full PV array and the units are producing power.    -Matt   I'd like to
give the system owner advice with t  
-- 
     Matt Sherald PIMBY Energy,
LLC NABCEP Certified Solar PV Installer(R) 304-704-5943


www.getpimby.blogspot.com [3]
www.getpimby.com [4]      -- 




Links:
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[1] http://members.sti.net/offgridsolar/
[2]
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[3] http://www.getpimby.blogspot.com
[4]
http://www.getpimby.com
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