20 : 10 : 39 : 29 . Use of a voltmeter to conduct the cow contact test. When using a voltmeter to measure voltage between contact points where one of those points is the floor surface or earth, a metal plate must make a high-quality conductive contact with the floor surface or earth, using the procedures described in § 20:10:39:31.

Source: 42 SDR 174 , effective June 21, 2016 .

General Authority: SDCL 49 - 47 - 2.

Law Implemented: SDCL 49-47-2 , 49 - 47 - 3 .