Persons Otherwise Qualified (Rule 33)

A person who does not satisfy the qualifications in Sections 031 and 032, may nonetheless be determined by the Commission to be a qualified testing professional or a qualified analyst if, on motion of any party, the Commission finds that person otherwise possesses the knowledge, skill, experience, training, or education that qualifies that person to offer expert testimony before the Commission. (4-6-23) 034. -- 050. (RESERVED) CALIBRATION OF AND EQUIPMENT USED FOR MEASURING AND RECORDING VOLTAGE, CURRENT, AND RESISTANCE Rules 51 through 70 051. GENERAL REQUIREMENTS FOR STRAY VOLTAGE MEASURING AND RECORDING EQUIPMENT (RULE 51). Equipment used for the measurement or testing of stray voltage, current, and resistance shall meet the following criteria: (4-6-23) 01. Resolution and Accuracy. The accuracy and resolution of any instrument used to measure or record cow contact voltage or current, shall limit the error to five percent (5%) or less at one volt (1 V) or two milliampere (2 mA). (4-6-23) 02. Voltage Measurement. Instruments used to measure cow contact voltage shall be capable of separating and independently measuring alternating current (AC) and direct current (DC) voltages. These instruments shall have a minimum internal impedance of ten thousand (10,000) ohm and shall be capable of measuring the true- rms voltage. (4-6-23) 03. Current Measurement. A clamp-on ammeter, a digital multi-meter (DMM) with clamp-on device, or an in-line ammeter shall be used to measure current through a conductor or resistor connected between two (2) points. The meters shall be capable of separating and independently measuring alternating current (AC) and direct current (DC) and shall be capable of measuring the true-rms current. Care must be taken to assure that clamp-on ammeters used have the required resolution and accuracy. (4-6-23) 04. Resistance Measurement. Resistance shall be measured using either a volt ohmmeter (VOM) or a DMM. Resolution shall be to the level of one (1) ohm or less when measuring a resistance of less than one thousand (1,000) ohm. Accuracy shall be within plus or minus five (+/-5) ohm for a five hundred (500) ohm resistance. (4-6-23) 05. Resistance-to-Earth Measurement. Grounding electrode resistance-to-earth measurements shall be made with a three- (3) point fall-of-potential instrument or a clamp-on resistance-to-earth tester. (4-6-23)