Section 31.61.01.075 - TEST 3 - PRIMARY PROFILE TEST01.Purpose. This test is to measure or calculate neutral-to-earth voltage (NEV) for a multi-grounded distribution system.02.Conducting the Test. The primary profile test requires concurrent measurement of the ground electrode resistance and current at all primary system ground points within three quarters (3/4) of a mile on either side of all primary service points serving the dairy, or to the end of the line if less than three quarters (3/4) of a mile. Alternatively, the voltage between a remote grounding rod and the primary ground point being tested may be measured.a. This test shall be conducted starting at one (1) end of the distribution system and working toward the other end along the main primary distribution system. Figure 4 below illustrates the procedure.i. Where the dairy is served by a dedicated tap of less than one-half (1/2) mile in length from a distribution line, the neutral-to-earth voltage shall be measured at each primary ground along the tap and along the distribution line to a distance of three-quarters (3/4) of a mile in each direction from the point of the tap; orii. Where a dairy is served by a dedicated tap that extends more than one-half (1/2) mile from the distribution line, the neutral-to-earth voltage shall be measured at each primary grounding electrode along the tap and along the distribution line to a distance of one-half (1/2) mile in each direction from the point of the tap.03.Recording the Data. The person conducting this test shall record the location of, and measured values at, each test point. Data and calculation results for these test points shall be recorded on the form in Appendix 3.Idaho Admin. Code r. 31.61.01.075