20 : 10 : 39 : 30 . Use of a milliammeter to conduct the cow contact test. When using an in-line milliammeter or a clamp-around milliammeter to measure current between contact points and 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 § 2 0:10:39:31.

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

General Authority: SDCL 49 - 47 - 2.

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