<p dir="ltr">Test resistance only on disconnected wiring, measure resistant to ground either side of the switching point. . The controller will likely be a open collector that will measure current to ground. Do nor use megger, you are not testing insulation. </p>
<div class="gmail_quote">On Jul 5, 2016 10:37 AM, "Drake" <<a href="mailto:drake.chamberlin@redwoodalliance.org">drake.chamberlin@redwoodalliance.org</a>> wrote:<br type="attribution"><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
Is there a way to test the conductivity sensors for the low water shutoff
and restart on a submersible well pump, from the surface?  
Could the wires be resistivity tested?<br><br>
What should the resistance readings be between the wires? Would a megohm
meter be the right tool to use? Could the pump be harmed by the high
voltage spike in the water around it produced by the meter?<br><br>
Thanks,<br><br>
Drake <br><br>
<a name="m_4262912209847196674__MailAutoSig"></a>Drake Chamberlin<br>
<i>Athens Electric LLC<br>
OH License 44810<br>
CO License 3773<br>
NABCEP Certified Solar PV <br>
<a href="tel:740-448-7328" value="+17404487328" target="_blank">740-448-7328</a><br>
</i><a href="http://athens-electric.com/" target="_blank">http://athens-electric.com/</a>
<br>
</div>

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