<html> <head> <title>Rule 20:10:39:10 General requirements for stray voltage measuring and recording.</title> <META NAME="Keywords" Content="Administrative Rules 20:10:39:10"> <META NAME="Description" Content="Administrative Rules 20:10:39:10 General requirements for stray voltage measuring and recording."> <meta http-equiv=Content-Type content="text/html; charset=windows-1252"> <meta name=Generator content="Microsoft Word 15 (filtered)"> <style> <!-- /* Font Definitions */ @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4;} @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin-top:0in; margin-right:0in; margin-bottom:10.0pt; margin-left:0in; line-height:115%; font-size:11.0pt; font-family:"Calibri",sans-serif; color:black;} a:link, span.MsoHyperlink {color:blue; text-decoration:underline;} a:visited, span.MsoHyperlinkFollowed {color:#954F72; text-decoration:underline;} .MsoChpDefault {font-family:"Calibri",sans-serif; color:black;} .MsoPapDefault {margin-bottom:10.0pt; line-height:115%;} @page WordSection1 {size:8.5in 11.0in; margin:49.7pt 1.0in 49.7pt 63.35pt;} div.WordSection1 {page:WordSection1;} --> </style> </head> <body lang=EN-US link=blue vlink="#954F72"> <div class=WordSection1> <p class=MsoNormal style='margin-bottom:0in;margin-bottom:.0001pt;text-align: justify;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><b><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>20</span></b><b><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>:</span></b><b><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>10</span></b><b><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>:</span></b><b><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>39</span></b><b><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>:</span></b><b><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>10</span></b><b><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>.&nbsp;&nbsp;General requirements for stray voltage measuring and recording.</span></b><span style='font-size:12.0pt;font-family:"Times New Roman",serif'> Equipment used for</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'> </span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>the measurement or testing of stray voltage, stray current, and resistance shall meet the following</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'> </span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>criteria:</span></p> <p class=MsoNormal style='margin-bottom:0in;margin-bottom:.0001pt;text-align: justify;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>&nbsp;</span></p> <p class=MsoNormal style='margin-bottom:0in;margin-bottom:.0001pt;text-align: justify;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (1)</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>&nbsp;&nbsp;</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>The accuracy and resolution of any instrument used to measure or record cow contact voltage or</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'> </span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>cow contact current shall limit the error to five percent or less at one volt or two milliampere;</span></p> <p class=MsoNormal style='margin-bottom:0in;margin-bottom:.0001pt;text-align: justify;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>&nbsp;</span></p> <p class=MsoNormal style='margin-bottom:0in;margin-bottom:.0001pt;text-align: justify;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (2)</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>&nbsp;&nbsp;</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>Instruments used to measure cow contact voltage must be capable of separating and</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'> </span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>independently measuring alternating current and direct current voltages. These instruments must</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'> </span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>have a minimum internal impedance of 10,000 ohms and must be capable of measuring the true</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>-</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>root</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'> </span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>mean square voltage;</span></p> <p class=MsoNormal style='margin-bottom:0in;margin-bottom:.0001pt;text-align: justify;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>&nbsp;</span></p> <p class=MsoNormal style='margin-bottom:0in;margin-bottom:.0001pt;text-align: justify;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (3)</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>&nbsp;&nbsp;</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>A clamp-on ammeter, a digital multi-meter with clamp-on device, or an in-line ammeter must</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'> </span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>be capable of separating and independently measuring alternating current and direct current and</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'> </span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>capable of measuring the true-root mean square current. A clamp-on ammeter must have the</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'> </span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>resolution and accuracy required in subdivision (1);</span></p> <p class=MsoNormal style='margin-bottom:0in;margin-bottom:.0001pt;text-align: justify;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>&nbsp;</span></p> <p class=MsoNormal style='margin-bottom:0in;margin-bottom:.0001pt;text-align: justify;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (4)</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>&nbsp;&nbsp;</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>Resistance is measured using either a volt ohmmeter or a digital multi-meter. Resolution must</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'> </span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>be to the level of 1 ohm or less when measuring a resistance of less than 1,000 ohms. Accuracy</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'> </span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>must be within plus or minus 5 ohms for a 500 ohm resistance; and</span></p> <p class=MsoNormal style='margin-bottom:0in;margin-bottom:.0001pt;text-align: justify;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>&nbsp;</span></p> <p class=MsoNormal style='margin-bottom:0in;margin-bottom:.0001pt;text-align: justify;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (5)</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>&nbsp;&nbsp;</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>Grounding electrode resistance-to-earth measurements are made with a three-point fall-of</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>-</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>potential</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'> </span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>instrument or a clamp-on resistance-to-earth tester.</span></p> <p class=MsoNormal style='margin-bottom:0in;margin-bottom:.0001pt;text-align: justify;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>&nbsp;</span></p> <p class=MsoNormal style='margin-bottom:0in;margin-bottom:.0001pt;text-align: justify;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>Source:</b> </span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>42</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'> SDR </span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>174</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>, effective </span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>June 21, 2016</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>.</span></p> <p class=MsoNormal style='margin-bottom:0in;margin-bottom:.0001pt;text-align: justify;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>General Authority:</b> SDCL </span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>49</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>-</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>47</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>-</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>2.</span></p> <p class=MsoNormal style='margin-bottom:0in;margin-bottom:.0001pt;text-align: justify;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>Law Implemented:</b> SDCL <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=49-47-2">49-47-2</A>, </span><span style='font-size:12.0pt;font-family: "Times New Roman",serif'>49</span><span style='font-size:12.0pt;font-family: "Times New Roman",serif'>-</span><span style='font-size:12.0pt;font-family: "Times New Roman",serif'>47</span><span style='font-size:12.0pt;font-family: "Times New Roman",serif'>-</span><span style='font-size:12.0pt;font-family: "Times New Roman",serif'>3</span><span style='font-size:12.0pt;font-family: "Times New Roman",serif'>.</span></p> <p class=MsoNormal style='margin-bottom:0in;margin-bottom:.0001pt;text-align: justify;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>&nbsp;</span></p> <p class=MsoNormal>&nbsp;</p> </div> </body> </html>