<div dir="auto"><span style="font-family:sans-serif;font-size:12.8px">0.5 to 6 mm2 is #20-#10 AWG</span></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Apr 27, 2021, 9:10 PM Sindelar Solar <<a href="mailto:Allan@sindelarsolar.com">Allan@sindelarsolar.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<p>August,</p>
<p>Thank you for this suggestion. I went to the site, and under "Two
Sizes for All Conductor Types" on that page it appears that
there's a model that'll work with 2-10AWG conductors:</p>
<blockquote>
<p>"With the 6 mm2 (10 AWG) variant, you can connect all conductor
types \u2013 with cross sections from 0.5 to 6 mm2 (2\u221210 AWG)".</p>
</blockquote>
<p>This would contradict what you wrote below, so I'm just checking
whether I missed something. <br>
</p>
<p>Thanks, Allan</p>
<div>On 4/27/2021 12:55 PM, August Goers
wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Hi Jason - I noticed that Tesla is using the Wago
connectors in their Powerwalls. They only go up to #10, but they
certainly appear to have some advantages such as easy QC
inspection, compactness, and price. We are in the process of
trying a batch of these out, but I hadn't considered using them
in exterior J-boxes. <br>
<div><a href="https://www.wago.com/global/electrical-interconnections/discover-installation-terminal-blocks-and-connectors/221" target="_blank" rel="noreferrer">https://www.wago.com/global/electrical-interconnections/discover-installation-terminal-blocks-and-connectors/221</a></div>
<div>August <br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Tue, Apr 27, 2021 at 10:42
AM Jason Szumlanski <<a href="mailto:jason@floridasolardesigngroup.com" target="_blank" rel="noreferrer">jason@floridasolardesigngroup.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="auto">I'd be interested to hear thoughts on Wago
221-6XX series connectors, specifically for THWN to Enphase
IQ/DG/TC conductor transitions or just THWN splices. </div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Mon, Apr 26, 2021, 8:40
PM Blake Gleason <<a href="mailto:blake@sunlightandpower.com" target="_blank" rel="noreferrer">blake@sunlightandpower.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr">Corey,
<div>Thank you! Agreed, the message from Staubli's Eng
dept is much less confusing (with the exception of the
statement about THHN tending to be solid vs stranded).</div>
<div>All -</div>
<div>What are you folks using to transition from PV Wire
to THHN/THWN-2 inside a junction box? We used to use
split bolts, which make an awesome electrical
connection, but are time-consuming and not easily
serviceable. Wire nuts (the right ones) are Listed,
but never felt reliable for that purpose. Same for
WAGO levers. I hear about people using Buchanan
splice caps, but I wonder about trading one set of
crimping problems for another. And of course, the
only problem with using THHN in an MC4 is that the
compression gland may not be as watertight as it is
with PVWire, and the Buchanans certainly are not
watertight. Terminal blocks generally aren't listed,
definitely aren't watertight, and raise inspectors'
eyebrows. Why is this so hard for me??</div>
<div>Best,</div>
<div>Blake</div>
<div>Thanks</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Mon, Apr 26, 2021
at 5:19 PM Corey Shalanski <<a href="mailto:coresolar@gmail.com" rel="noreferrer noreferrer" target="_blank">coresolar@gmail.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr">
<div>Blake,</div>
<div>In addition to Bryan's notes, here is some
unconfusing information directly from Stäubli's
engineering dept:</div>
<div dir="ltr">
<div>
<blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px">
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">The
answer is categorically no: <b>you cannot
use THHN wires with MC4 connectors.</b>
There are several reasons for this:<br>
1. <u>Certification</u>: our MC4
connectors are certified to UL6703, which
only covers UL4703 PV wire or USE2 cable.
Any other wire type is not covered by our
certification<br>
2. <u>Internal validation</u>: we have
no internal testing or validation of how MC4
or Evo2 connectors perform with THHN
cables. We therefore cannot warranty /
accept the use of THHN cables with our PV
connectors. The allowable cables and
applications for our PV connectors is
clearly stated in the assembly instructions.<br>
3. <u>Construction</u>: THHN cables use
very rigid PVC insulators, which behave very
differently than XPLE or TPE insulators that
are the most widely used on PV wires. PVC
has a very low elastic range and easily
deforms permanently under load/thermal
cycling. It is not a well-suited cable for
higher temperature or high temperature
fluctuating applications where
compression-type cable seals (i.e. cable
glands) are used. Also, THHN cables tend to
be single-conductor solid core cables, which
are absolutely not allowed with crimp
terminations like the MC4 (or any other PV
connector on the market for that matter).
They also are not allowed by UL6703. <br>
</blockquote>
</blockquote>
</div>
</div>
<div>These comments were forwarded to me by Jeff
Wang, who works for Stäubli North America.</div>
<div>--</div>
<div>Corey Shalanski</div>
<div>Jah Light Solar</div>
<div>Portland, Jamaica</div>
<div><br>
</div>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Mon, Apr 26,
2021 at 9:23 AM <<a href="mailto:blake@sunlightandpower.com" rel="noreferrer noreferrer" target="_blank">blake@sunlightandpower.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><br>
<div dir="ltr">Bryan,
<div>Thank you for the link. I am confused by
the "PVC" section you referenced. Here's
the complete text:</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"> For
safety reasons Stäubli prohibits the use of
PVC cables.
Cables made from PVC can be connected to
MC4-Evo 2 since
the insulation material of the connector
(Polyamide) is suitable to
be connected to PVC. PVC cables usually have
an upper limiting
temperature of 70 °C, in fixed installations
sometimes 80 °C. <br>
</blockquote>
<div>THHN/THWN-2 is made with PVC insulation,
so I assume that it falls under the category
of a "PVC cable."</div>
<div>So, the first sentence seems to say that
it's not allowed by Staubli. But then the
second sentence seems to say that is IS
allowed. And then the third sentence
doesn't seem to be contemplating the most
common PVC wire type of all (in the US),
which is THHN/THWN-2, which has a 90 degree
rating?!</div>
<div>Can you help un-confuse me?</div>
<div>Thank you!</div>
<div>Blake</div>
</div>
</blockquote>
</div>
</div>
</blockquote>
</div>
</blockquote>
</div>
</blockquote>
</div>
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<div>-- <br>
<div>
<p class="MsoNormal" style="line-height:normal"><b><span>Allan
Sindelar</span></b><span><br>
</span><a href="mailto:allan@sindelarsolar.com" target="_blank" rel="noreferrer"><span>allan@sindelarsolar.com</span></a><span><br>
</span><span>NABCEP
Certified PV Installation
Professional<br>
New Mexico EE98J Journeyman Electrician<br>
Founder (Retired), <span>Positive
Energy, Inc<span>.</span></span><br>
<b>505 780-2738 cell</b></span><span><u></u><u></u></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
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