Stray Current Or Voltage Tests (Rule 71)

Subject to Subsection 071.02, there are six (6) tests used to detect and measure stray current or voltage. (4-6-23) 01. Scheduling of Stray Voltage Tests. Efforts shall be made to perform the tests under conditions substantially similar to those conditions existing at the time(s) the dairy producer believes stray voltage to be a problem. (4-6-23) a. Test 1 - Cow Contact Test; (4-6-23) b. Test 2 - Forty-Eight (48) Hour Test; (4-6-23) c. Test 3 - Primary Profile Test; (4-6-23) d. Test 4 - Secondary Neutral Voltage Drop Test; (4-6-23) e. Test 5 - Load Box Test; and (4-6-23) f. Test 6 - Signature Test. (4-6-23) 02. Testing Sequence. Test 1 shall be performed first. Tests 1 and 2 are used to determine the presence and level of stray voltage and shall be performed in all investigations, subject to the provisions of Subsection 071.03. IDAHO ADMINISTRATIVE CODE IDAPA 31.61.01 Idaho Public Utilities Commission Stray Voltage Rules Section 072 Page 8 Tests 3, 4, 5, and 6 may be performed in any order and may be performed without first determining that these tests are required under Paragraph 071.02.b. Tests 3, 4, 5, and 6 may be performed prior to starting the recording for Test 2 or while Test 2 is in progress. Test 2 may be interrupted as necessary to conduct Tests 4, 5, and 6, or for review and analysis of the data recorded up to that point. (4-6-23) a. If the results from Tests 1 and 2 indicate that stray voltage does not exceed the preventive action level (PAL), the utility has no further testing or remediation obligations under these rules during this test cycle. (4-6-23) b. If the PAL is exceeded, the utility shall perform the remaining four (4) tests except as provided in Subsection 071.03. The utility shall also perform analysis to determine whether the portion of the stray current or voltage attributable to an off-farm source exceeds fifty percent (50%) of the PAL. (4-6-23) c. If the PAL is exceeded, and the portion of the stray current or voltage attributable to an off-farm source does not exceed fifty percent (50%) of the PAL, the utility has no further testing or remediation obligations. (4-6-23) d. If the PAL is exceeded, and the portion of the stray current or voltage attributable to an off-farm source exceeds fifty percent (50%) of the PAL, the utility shall conduct remediation pursuant to Section 091. Under this condition, the forty-eight (48) hour recording of Test 2 may be reduced to no fewer than twenty-four (24) hours. (4-6-23) e. For all testing conducted under these rules, the utility shall have a qualified analyst prepare a report pursuant to Section 082. (4-6-23) 03. Suspended or Limited Testing. The utility may suspend a stray voltage investigation or conduct a limited evaluation, as agreed between the utility and the dairy producer. (4-6-23)