Section 31.61.01.076 - TEST 4 - SECONDARY NEUTRAL VOLTAGE DROP TEST01.Purpose. This test is used to determine the impact of each secondary service on the neutral-to-earth (NEV) and cow contact voltages on the dairy under controlled conditions.02.Conducting the Test. This test shall be performed for all service entrances. A proxy load of known characteristics (such as a resistive load like a one hundred twenty (120) volt, fifteen hundred (1,500) watt hairdryer) is required for this test. The proxy load must create a known and stable current and subsequent voltage drop for each neutral serving a main panel, sub-panel or end-of-service area. All service entrances other than that being tested shall be turned "off" to perform this test. A diagram showing the connections and measurement points for this test is shown in Figure 5.03.Data Collection. The following data shall be collected for each secondary neutral tested:a. Gauge and type of neutral wire.b. Length of neutral wire.d. Voltage drop (VDropM) between both ends of the secondary neutral being tested.e. Cow contact voltage (Vcc) or current (Icc) at the same points used in the forty-eight (48) hour test.f. Primary neutral at the transformer to reference ground voltage, Vp.g. Secondary neutral to reference ground voltage, Vs.04.Measurements. The three (3) voltages (Vcc, Vp and Vs) shall be measured with the proxy load "off" and "on." Calculated expected voltage drops (VDropC) (see Appendix 4) shall be compared with measured voltage drops (VDropM). If the measured and calculated voltage drops differ significantly, further investigation shall be undertaken to determine the source of additional voltage drop within the circuit. Neutral current shall be measured and recorded with the proxy load on (Isn).05.Recording the Data. Any 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 4.Idaho Admin. Code r. 31.61.01.076