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<p>Ray,</p>
<p>I believe that there was a burned wire/lug issue with a loose
connection in a DC 250 box that caused the big concern about fine
stranded wires only being used in lugs identified for fine
strands. The old Trace 250 boxes were UL listed prior. <br>
</p>
<p>I've never seen a problem with a loose wire in the DC250, but I
check them every time I run into one of those old boxes.</p>
Kent Osterberg<br>
Blue Mountain Solar
<p><br>
</p>
<div class="moz-cite-prefix">On 9/3/2025 1:39 PM, Ray Walters via
RE-wrenches wrote:<br>
</div>
<blockquote type="cite" cite="mid:f68c1157-c71d-4d15-8f26-ff93a24cb84a@solarray.com">
<p>I've got to ask: Are none of the lugs on these Chinese
inverters approved for fine strand cable? I just have not had a
problem with that, but I've mostly used Magnum, Midnite, and
Outback equipment over the years. What were the lugs on the
old Trace DC 250 boxes? Were they fine strand rated? They sure
were tough to get 4/0 into, as William mentioned. </p>
<p>Ray <br>
Remote Solar</p>
<div class="moz-cite-prefix">On 9/3/2025 12:57 PM, Kent via
RE-wrenches wrote:<br>
</div>
<blockquote type="cite" cite="mid:50bf396a-4f5b-42bc-9f61-35a89d651dfc@coveoregon.com">
<p>William,</p>
<p>If the only reason the ferrule wouldn't fit after using the
hex crimper was the ridge left where the dies meet, you could
rotate the cable 120 degrees and crimp the ferrule again.</p>
<p>I doubt that the indenter crimper will do a decent job with
large ferrules.</p>
<p>I do like your thin piece of copper solution. Not UL approved
but I dare say wrench approved.<br>
</p>
Kent Osterberg<br>
Blue Mountain Solar
<p><br>
</p>
<div class="moz-cite-prefix">On 9/2/2025 8:55 PM, William Miller
via RE-wrenches wrote:<br>
</div>
<blockquote type="cite" cite="mid:5e45555d26469d1c033400d609559127@mail.gmail.com">
<meta name="Generator" content="Microsoft Word 14 (filtered medium)">
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana","sans-serif"">Friends:</span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana","sans-serif""> </span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana","sans-serif"">Thank
you for all of your input on this question. I feel it
only right I report back how this turned out</span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana","sans-serif""> </span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana","sans-serif"">I
tried a crimper like this:</span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana","sans-serif""> </span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana","sans-serif""> </span></p>
<p class="MsoNormal"><br>
</p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana","sans-serif"">It
left a jagged ridge on both sides of the ferrule where
the dies met.</span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana","sans-serif""> </span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana","sans-serif"">The
crimper below was suggested but I have not tried it:</span></p>
<p class="MsoNormal"><br>
</p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana","sans-serif"">This
was suggested but I have not tried it either:</span></p>
<p class="MsoNormal"><br>
</p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana","sans-serif""> </span><br>
</p>
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