<div dir="auto">Hi Howie,</div><div dir="auto"><br></div><div dir="auto">NEC 2020 states in 690.13(E): \u201cThe PV system disconnecting means shall simultaneously disconnect the PV system conductors that are not solidly grounded from all conductors or other wiring systems\u201d. </div><div dir="auto"><br></div><div dir="auto">Sounds to me like there is no change to this requirement. </div><div dir="auto"><br></div><div dir="auto">Best,</div><div dir="auto"><br></div><div dir="auto">Chris </div><div dir="auto"><br></div><div dir="auto"><br></div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Oct 8, 2020 at 5:59 PM Howie Michaelson <<a href="mailto:Howie.Michaelson@gmail.com">Howie.Michaelson@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif">Hi Guys,</div><div class="gmail_default" style="font-family:verdana,sans-serif">I seem to recall hearing at a workshop maybe 18 months ago, that NEC 2020 was changing the string disconnect requirements for ungrounded arrays, changing from the need to break both the positive and negative legs of a string, to just one leg. This might have been specific to strings with optimizers, but now I cannot find my notes on this topic. Am I just wishful thinking here?</div><div class="gmail_default" style="font-family:verdana,sans-serif">Thanks,</div><div class="gmail_default" style="font-family:verdana,sans-serif">Howie<br clear="all"></div><div><div dir="ltr" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><span><span><font color="#888888"><span style="color:rgb(120,63,4)"><b>Howie Michaelson<br></b></span><span style="color:rgb(0,0,255)"></span></font></span></span><span><span><span><span><font color="#888888"><span style="color:rgb(106,168,79)"><b>Sun Catcher</b></span><br><span style="color:rgb(68,68,68)"><span style="background-color:rgb(255,255,255)"><font size="2">
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</blockquote></div></div>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div>Chris Sparadeo</div><div><br></div><div><br></div><div>C_802-369-4458</div><div>H_802-728-3059</div><div></div></div></div></div></div></div>