<div dir="ltr">Yeah, normally it would have been our practice to use a j-box and bring down three strings. In this case it made more sense to combine strings on the roof and just bring down a single circuit in a single conduit. Long story... long wire run... probably bad planning in hindsight.<div>
<br></div><div>The MNPV6-AC is a new product with a disconnect on the front exterior and up to six breakers on a DIN rail that you can combine with bus bars that they supply. It is specifically for combining AC strings. I think it's rated for 120A per pole. I'm impressed with the units. It makes a great residential Enphase string combiner. </div>
<div><br></div><div>List price is $239.00 and it's on their site as the last item here: </div><div><a href="http://www.midnitesolar.com/products.php?menuItem=products&productCat_ID=34&productCatName=PV%20Disconnecting%20Combiners%20-Not%20Birdhouse%20Compatible" target="_blank">http://www.midnitesolar.com/products.php?menuItem=products&productCat_ID=34&productCatName=PV%20Disconnecting%20Combiners%20-Not%20Birdhouse%20Compatible</a></div>
<div><br>You are right - jurisdictions around here do not require disconnects on the roof. The AC connectors on the inverters suffice. We normally just do a j-box and transition to THWN. We've been using TC-ER to extend the trunk lines and just use one j-box with all circuits running down a single conduit to whatever combiner we need or to the load center for smaller systems. No utility discos <10kW here. Yay!<br>
<br><div><div style="font-size:13px;font-family:Verdana,Arial,Helvetica,sans-serif"><div style="margin:0px 0px 8px"><p style="margin:0px"><span style="color:rgb(128,128,128)"><strong>Jason Szumlanski</strong><em> </em></span></p>
<p style="margin:0px"><span style="color:rgb(128,128,128)"><em>Fafco Solar</em></span><br><span style="color:rgb(128,128,128)"><span></span></span></p><p style="margin:0px"><span style="color:rgb(128,128,128)"><em><br></em></span></p>
</div></div></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Feb 8, 2013 at 11:11 AM, jay peltz <span dir="ltr"><<a href="mailto:jay@asis.com" target="_blank">jay@asis.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div style="word-wrap:break-word">Hi jason,<div><br></div>
<div>3 questions, </div><div>I can't find the MNPV-AC in midnites price list, is this something custom or just new?</div><div>And </div><div>if you don't need breakers why not just do a junction box on the roof.</div>
<div>and</div><div>the inspectors I've had have requested a disconnecting means on the roof or visible from the roof. So I've done the enphase suggested switches on the roof, but no overcurrent. It doesn't appear that is a requirement from your inspector?</div>
<div><br></div><div><br></div><div>jay</div><div><br></div><div>peltz power</div><div><div><br></div><div><br><div><div>On Feb 8, 2013, at 7:27 AM, Jason Szumlanski wrote:</div><br><blockquote type="cite"><div dir="ltr">
Oh, yes - that is a great application for the MNPV-AC. I didn't mean to imply there isn't a good use for them. In this particular instance the three MVPV-AC's are really subcombiners that get all get tied together in another subpanel at ground level. They really were not necessary, but made it more convenient and cost effective.<div>
<br></div><div>It's just interesting how Midnite advertises that they can be mounted as flat as a 3:12 pitch. What application would allow this mounting angle where it is still readily accessible? The spec/advertising seems to imply that these can be roof mounted in an AC string combining application.<div>
<br></div><div>The Soladeck combiner with fuses would appear to be non-code compliant in any situation. I would love for someone to refute that in a convincing way given the access requirements in 240.24(A).</div><div><br>
</div><div><strong style="color:rgb(128,128,128);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:13px">Jason Szumlanski</strong></div><div><em style="color:rgb(128,128,128);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:13px">Fafco Solar</em></div>
<div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, Feb 7, 2013 at 7:31 PM, jay peltz <span dir="ltr"><<a href="mailto:jay@asis.com" target="_blank">jay@asis.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div style="word-wrap:break-word">Hi Jason,<div><br></div><div>Is it possible to install them on the side of a building?</div><div>And Dan's suggestion for the remote midnite might be perfect.</div><span><font color="#888888"><div>
<br></div><div>jay</div></font></span><div><div><div><br></div><div><br><div><div>On Feb 7, 2013, at 3:55 PM, Jason Szumlanski wrote:</div><br><blockquote type="cite"><div dir="ltr">Jay,<div><br></div><div>I assume you mean pitched roofs, or not readily accessible flat roofs. This particular project happens to be a flat commercial roof, but with no permanent ladder or hatch. I really didn't have to use the MNPV6-AC's, but it made sense in this case (excluding the access issue).</div>
<div><br></div><div>Looks like my options are to remove the combiners or install a permanent access. Neither are fun options. Live and learn...<br><br><div><div style="font-size:13px;font-family:Verdana,Arial,Helvetica,sans-serif">
<div style="margin:0px 0px 8px"><div style="margin:0px"><span style="color:rgb(128,128,128)"><strong>Jason Szumlanski</strong><em> </em></span></div><div style="margin:0px">
<span style="color:rgb(128,128,128)"><em>Fafco Solar</em></span><br><br></div></div>
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