<p> 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.</p>
<p>I am curious how it is working?</p>
<p>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. </p>
<pre><strong><span>Dave Angelini Offgrid Solar
"we go where powerlines don't"
<a href="http://members.sti.net/offgridsolar/" target="_blank">http://members.sti.net/offgridsolar/</a>
e-mail <a href="mailto:offgridsolar@sti.net">offgridsolar@sti.net</a>
text 209 813 0060</span></strong></pre>
<p>On Thu, 7 Nov 2019 14:45:35 -0500, Matt Sherald <matt@getpimby.com> wrote:</p>
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<div>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.</div>
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<div>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. </div>
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<div>I'd like to give the system owner advice with t </div>
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<div>Matt Sherald</div>
PIMBY Energy, LLC</div>
<div>NABCEP Certified Solar PV Installer®</div>
<div>304-704-5943<br /><br /></div>
<span><a href="http://www.getpimby.blogspot.com">www.getpimby.blogspot.com</a><br /></span><a href="http://www.getpimby.com">www.getpimby.com</a></div>
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