20 : 10 : 39 : 53 . The signature test. The signature test determines the contribution to stray current or stray voltage of individual pieces of equipment operating on the dairy. The test is best performed when there is minimal farm electrical activity.

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

General Authority: SDCL 49-47-2.

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