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--></style></head><body lang="EN-US" link="blue" vlink="purple"><div class="WordSection1"><p class="MsoNormal"><span style="color:#44546a">Hi William,</span></p><p class="MsoNormal"><span style="color:#44546a"> </span></p>
<p class="MsoNormal"><span style="color:#44546a">This has also been a longstanding problem for us – and one that we don’t have a good solution for. Technically speaking we’re supposed to use the listed fitting with all the parts that come with it. However, the rubber gaskets between the connector and box cause issues with tightening as you mention below and also crack over time. Some inspectors don’t want us using the gaskets at all. I like your idea about using the Arlington yellow-colored gaskets. They are nice a solid. We’ve been putting a good quality clear sealant around all of our outdoor fittings for a while now and it seems to have stopped most of the water intrusion into the conduit. We also drill drip holes in boxes where we feel there is a good chance that moisture will enter. This is also a contentious decision as technically the listed outdoor box shouldn’t have holes drilled in it…</span></p>
<p class="MsoNormal"><span style="color:#44546a"> </span></p><p class="MsoNormal"><span style="color:#44546a">Best, August</span></p><p class="MsoNormal"><span style="color:#44546a"> </span></p><div><div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <a href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a> [mailto:<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a>] <b>On Behalf Of </b>William Miller<br>
<b>Sent:</b> Thursday, January 16, 2014 11:54 AM<br><b>To:</b> 'RE-wrenches'<br><b>Subject:</b> Re: [RE-wrenches] Concrete tight versus raintight</span></p></div></div><p class="MsoNormal"> </p><p class="MsoNormal">
<span style="color:#1f497d">Friends:</span></p><p class="MsoNormal"><span style="color:#1f497d"> </span></p><p class="MsoNormal"><span style="color:#1f497d">We used some Bridgeport fittings yesterday. My foreman reports the following:</span></p>
<p class="MsoPlainText"> </p><p class="MsoPlainText"><i>The new blue rain tite connectors have a prob. The connectors have a plastic gasket/ring that seals between the connector body and the box. It is impossible to tighten the con to box without destroying the ring or having a slightly loose con/box connection. A loose connection means poor bonding. </i></p>
<p class="MsoPlainText"> </p><p class="MsoPlainText">I would add that any looseness of these fittings can contribute to mechanical failure of conduit runs. We rely on code compliant strapping *<b>and</b>* secure tightening of fittings to keep a conduit assembly secure and in place for years to come. It looks like we need to find a fitting with firmer washers. The Arlington NMLT fittings have yellow washers that are pretty rigid. I will rob one and try it on the Bridgeports. We bought a quantity of the EMT fittings and I don’t want to have to replace them…</p>
<p class="MsoPlainText"> </p><p class="MsoPlainText">William</p><p class="MsoPlainText"> </p><p class="MsoNormal"><span style="color:#1f497d"> </span></p><p class="MsoNormal"><span style="color:#1f497d"> </span></p><div><div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <a href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a> [<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org">mailto:re-wrenches-bounces@lists.re-wrenches.org</a>] <b>On Behalf Of </b>August Goers<br>
<b>Sent:</b> Thursday, January 16, 2014 8:00 AM<br><b>To:</b> RE-wrenches<br><b>Subject:</b> Re: [RE-wrenches] Concrete tight versus raintight</span></p></div></div><p class="MsoNormal"> </p><p class="MsoNormal"><span style="color:#44546a">Hi William,</span></p>
<p class="MsoNormal"><span style="color:#44546a"> </span></p><p class="MsoNormal"><span style="color:#44546a">About 5 years ago this became a big issue up in San Francisco and we had to learn the hard way. We used to just go buy outdoor EMT fittings and we were okay, then the inspectors started requiring fittings that say raintight or wet location (often stamped “wetloc”) on them. I don’t know for certain, but I believe it might have been a clarification added in the 2008 NEC at the time. See “NEC 358.42 Couplings and Connectors. Couplings and connectors used with EMT shall be made up tight. Where buried in masonry or concrete, they shall be concretetight type. Where installed in wet locations, they shall comply with 314.15.”</span></p>
<p class="MsoNormal"><span style="color:#44546a"> </span></p><p class="MsoNormal"><span style="color:#44546a">If you go over to NEC 314.15 they mention that fittings installed in wet locations shall be listed for use in wet locations. </span></p>
<p class="MsoNormal"><span style="color:#44546a"> </span></p><p class="MsoNormal"><span style="color:#44546a">So, you just need to make sure that the fittings you get are listed for the correct purpose. I have seen both concretetight and wetloc type. As someone else mentioned, most of the wetloc fittings have a plastic sealing ring in them and many or blue colored.</span></p>
<p class="MsoNormal"><span style="color:#44546a"> </span></p><p class="MsoNormal"><span style="color:#44546a">Best,</span></p><p class="MsoNormal"><span style="color:#44546a"> </span></p><p class="MsoNormal"><span style="color:#44546a">August</span></p>
<p class="MsoNormal"><span style="color:#44546a">Luminalt</span></p><p class="MsoNormal"><span style="color:#44546a"> </span></p><div><div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in"><p class="MsoNormal">
<b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <a href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a> [mailto:<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a>] <b>On Behalf Of </b>William Miller<br>
<b>Sent:</b> Wednesday, January 15, 2014 10:32 PM<br><b>To:</b> RE-wrenches<br><b>Subject:</b> [RE-wrenches] Concrete tight versus raintight</span></p></div></div><p class="MsoNormal"> </p><p class="MsoNormal">Friends:</p>
<p class="MsoNormal"> </p><p class="MsoNormal">It appears I may have a whole in my education. I thought all EMT compression fittings were alike. It appears that I have been using “concrete tight” fittings where I should have been using “raintight” fittings. Did they use to be the same item? I did a web search on the differences and came up empty. I want to be informed in this area and appreciate any knowledge.</p>
<p class="MsoNormal"> </p><p class="MsoNormal">William Miller</p><p class="MsoNormal"> </p><p class="MsoNormal"> </p><p class="MsoNormal"><img border="0" width="140" height="61" id="Picture_x0020_1" src="cid:image001.jpg@01CF12BD.C7C948D0" alt="Gradient Cap"></p>
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