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<p>Thanks Dan, that has also been my understanding of all listed
equipment. Certain switches etc will say on them "AC only", or
give different DC ratings. Otherwise the voltage listing is
AC/DC.<br>
</p>
<pre class="moz-signature" cols="72">Ray Walters
Remote Solar
303 505-8760</pre>
<div class="moz-cite-prefix">On 5/10/21 2:55 PM, Dan Fink wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAF+3LncDfxGK+Ty7ZCnFnS_XAnSs=ge5yRUe_=7afNwZ8JhzLA@mail.gmail.com">
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<div dir="ltr">
<div dir="ltr">Esteemed Wrenches; I spoke with engineers at both
Wago and 3M today regarding the AC vs. DC ratings of Wago 221
and other wire splicing products. Both engineers stated that
standard UL486C (Splicing Wire Connectors) applies to <b><i>both</i></b>
AC and DC voltages unless the product is specifically listed
for <i><b>only </b></i>AC or DC. </div>
<div dir="ltr"><br>
</div>
<div>They both gave the example that the same applies to the
actual wire that is being spliced: Is the THWN-2 wire we use
inside DC OCPD panels specifically UL rated for DC? <b>No
(UL83)</b>. Is it acceptable for DC? <b>Yes,</b> we use it
all the time for DC circuits. How about USE-2 and MC? Can we
use them for both AC and DC? <b>Yes, </b>we use them all the
time for both AC and DC. Is it specifically UL rated for DC? <b>No.
It doesn't need to be.</b></div>
<div><br>
</div>
<div>Of course any wiring device that <b>disconnects </b>any
circuit under load must be rated for either AC, DC or both
depending on the application. But wire splicing connectors are
not intended as a disconnecting device under UL486C.</div>
<div><br>
</div>
<div>I hope this clears up any confusion.</div>
<div><br>
</div>
<div>Best regards;</div>
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<div dir="ltr" class="gmail_attr">On Fri, May 7, 2021 at 3:43
PM Jason Szumlanski <<a
href="mailto:jason@floridasolardesigngroup.com"
moz-do-not-send="true">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">In another thread these connectors were
discussed recently. There was a question regarding the
suitability for DC circuits. I don't think we came up with
any answers or consensus on that. I see the connectors are
UL listed to the 486C standard. I can't determine whether
that is applicable to AC and DC circuits. Does anyone
know?
<div dir="auto"><br>
</div>
<div dir="auto">I have only used these on AC circuits and
they have been very effective. Now I'm curious whether
they can be used on DC circuits up to 600 volts. </div>
<div dir="auto"><br>
</div>
<div dir="auto">While on the subject, I noticed they are
UL 467 listed for grounding and bonding. That's helpful
where you have EGC splices for conductors up to #10 AWG
inside junction boxes. </div>
<div dir="auto"><br>
</div>
<div dir="auto">Jason Szumlanski</div>
<div dir="auto">Florida Solar Design Group</div>
</div>
<br>
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