<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /></head><body style='font-size: 10pt; font-family: Verdana,Geneva,sans-serif'>
<p>The thumper sounds like the one to use, but what does it destroy? Does it induce a much higher voltage on the line than regular line voltage? We are dealing with open circuit problems.</p>
<p>We can return to our original plan of digging up areas and checking for voltage on the lines with a voltage sensor.</p>
<p>Thanks,</p>
<p>Drake</p>
<p><br /></p>
<p><em>Drake Chamberlin</em></p>
<p><em>Athens Electric LLC</em></p>
<p><em>Ohio Electrical Contractor’s License 44810</em></p>
<p><em>CO Master Electrician’s License 4526</em></p>
<p><em>NABCEP Certified PV Installation Professional</em></p>
<div id="signature">---<br />
<div class="pre" style="margin: 0; padding: 0; font-family: monospace"> </div>
</div>
<p><br /></p>
<p id="reply-intro">On 2023-04-18 12:04, Brian Mehalic via RE-wrenches wrote:</p>
<blockquote type="cite" style="padding: 0 0.4em; border-left: #1010ff 2px solid; margin: 0">
<div id="replybody1">
<div dir="ltr">Not sure about rental sources in your area, but there are two options:
<div><br />
<div>1) An underground cable fault locator, aka a "thumper," which only works on direct buried cables. It is a destructive test (at the fault location), and should only be performed when there is a known fault in order to locate it. It requires "walking" the cable run with a sensing device to hear the "thump" generated by the high current/high voltage induced on the line.</div>
<div> </div>
<div>2) A time domain reflectometer (TDR), which is sort of like radar in that low energy signals are reflected by changes in cable impedance; it is non-destructive, but also not as accurate in terms of the location (providing a cable length to the fault, rather than a "thump" at the actual fault location) and typically cannot see higher resistance (≈>200 MΩ) faults that the thumper can.<br clear="all" />
<div>
<div class="v1gmail_signature" dir="ltr">
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div> </div>
<div>Brian Mehalic <br />NABCEP Certified Solar PV Installation Professional™ R031508-59</div>
<div>National Electrical Code® CMP-4 Member</div>
<div>(520) 204-6639<br />
<div> </div>
<div>
<div>
<div>Solar Energy International<br /><a href="http://www.solarenergy.org" target="_blank" rel="noopener noreferrer">http://www.solarenergy.org</a></div>
</div>
</div>
</div>
<div> </div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<br />
<div class="v1gmail_quote">
<div class="v1gmail_attr" dir="ltr">On Tue, Apr 18, 2023 at 8:27 AM Matt Sherald via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" rel="noreferrer">re-wrenches@lists.re-wrenches.org</a>> wrote:</div>
<blockquote class="v1gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left: 1px solid #cccccc; padding-left: 1ex;">
<div dir="ltr">
<div>Hi Drake,</div>
<div> </div>
<div>I've rented a set-up from my electrical supply house. I'd check to see if Scott Electric/Advantage Rental serves your part of Ohio.</div>
<div> </div>
<div>If memory serves, it is two pieces of equipment that you need. One to trace the line and a second to find the fault.</div>
<div> </div>
<div>-Matt</div>
</div>
<br />
<div class="v1gmail_quote">
<div class="v1gmail_attr" dir="ltr">On Tue, Apr 18, 2023 at 11:20 AM Drake Chamberlin via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" rel="noreferrer">re-wrenches@lists.re-wrenches.org</a>> wrote:</div>
<blockquote class="v1gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left: 1px solid #cccccc; padding-left: 1ex;">I understand that there is a tool that locates underground faults in <br />buried cables. No one in our area has one. There are high tech cable <br />tracers now, but they don't advertise that they can find underground <br />breaks in wires.<br /><br />One company online had one that advertised that function. The entire kit <br />came to $5 or $6K.<br /><br />Does anyone know where one can be rented.<br /><br />Thank you,<br /><br />Drake<br /><br />Drake Chamberlin<br />Athens Electric LLC<br />Ohio Electrical Contractor's License 44810<br />CO Master Electrician's License 4526<br />NABCEP Certified PV Installation Professional<br /><br /><br /><br />-- <br />_______________________________________________<br />List sponsored by Redwood Alliance<br /><br />Pay optional member dues here: <a href="http://re-wrenches.org" target="_blank" rel="noopener noreferrer">http://re-wrenches.org</a><br /><br />List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" rel="noreferrer">RE-wrenches@lists.re-wrenches.org</a><br /><br />Change listserver email address & settings:<br /><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" target="_blank" rel="noopener noreferrer">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br /><br />There are two list archives for searching. When one doesn't work, try the other:<br /><a href="https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/" target="_blank" rel="noopener noreferrer">https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/</a><br /><a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org" target="_blank" rel="noopener noreferrer">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a><br /><br />List rules & etiquette:<br /><a href="http://www.re-wrenches.org/etiquette.htm" target="_blank" rel="noopener noreferrer">http://www.re-wrenches.org/etiquette.htm</a><br /><br />Check out or update participant bios:<br /><a href="http://www.members.re-wrenches.org" target="_blank" rel="noopener noreferrer">http://www.members.re-wrenches.org</a><br /><br /></blockquote>
</div>
<br clear="all" /><br /><span>-- </span><br />
<div dir="ltr">
<div dir="ltr">
<div>
<div>
<div>Matt Sherald</div>
PIMBY Energy, LLC</div>
<div> </div>
<div>304-704-5943</div>
</div>
</div>
</div>
_______________________________________________<br />List sponsored by Redwood Alliance<br /><br />Pay optional member dues here: <a href="http://re-wrenches.org" target="_blank" rel="noopener noreferrer">http://re-wrenches.org</a><br /><br />List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" rel="noreferrer">RE-wrenches@lists.re-wrenches.org</a><br /><br />Change listserver email address & settings:<br /><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" target="_blank" rel="noopener noreferrer">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br /><br />There are two list archives for searching. When one doesn't work, try the other:<br /><a href="https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/" target="_blank" rel="noopener noreferrer">https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/</a><br /><a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org" target="_blank" rel="noopener noreferrer">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a><br /><br />List rules & etiquette:<br /><a href="http://www.re-wrenches.org/etiquette.htm" target="_blank" rel="noopener noreferrer">http://www.re-wrenches.org/etiquette.htm</a><br /><br />Check out or update participant bios:<br /><a href="http://www.members.re-wrenches.org" target="_blank" rel="noopener noreferrer">http://www.members.re-wrenches.org</a><br /><br /></blockquote>
</div>
</div>
<br />
<div class="pre" style="margin: 0; padding: 0; font-family: monospace">_______________________________________________<br />List sponsored by Redwood Alliance<br /><br />Pay optional member dues here: <a href="http://re-wrenches.org" target="_blank" rel="noopener noreferrer">http://re-wrenches.org</a><br /><br />List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a><br /><br />Change listserver email address & settings:<br /><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" target="_blank" rel="noopener noreferrer">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br /><br />There are two list archives for searching. When one doesn't work, try the other:<br /><a href="https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/" target="_blank" rel="noopener noreferrer">https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/</a><br /><a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org" target="_blank" rel="noopener noreferrer">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a><br /><br />List rules & etiquette:<br /><a href="http://www.re-wrenches.org/etiquette.htm" target="_blank" rel="noopener noreferrer">http://www.re-wrenches.org/etiquette.htm</a><br /><br />Check out or update participant bios:<br /><a href="http://www.members.re-wrenches.org" target="_blank" rel="noopener noreferrer">http://www.members.re-wrenches.org</a><br /><br /></div>
</blockquote>
</body></html>