![]() ![]() Finding the cause is generally not simple because different sources may act together and at different times. Sources of stray voltage can be varied and complex. Stray electricity may also be "imported" from other buildings connected to the same electrical installation, or from other users connected to the same ESB transformer Stray electricity can arise because of poor electrical connections, corrosion of switches, defective wiring, frayed insulation, faulty equipment or heavily loaded power lines. ![]() The sources of these relatively small electrical currents that pass through animal’s bodies are often difficult to locate. Human body resistance can be more than 30 times that of cows. Humans have a much higher body resistance and so are not as affected by small voltage differences in the same way as cows. Also, different individuals, either cows or humans, react differently to voltage differences due to their physiological makeup. The ease at which current can flow through a cow's body depends on which path it takes. Body ResistanceĬows are much more susceptible to stray voltages than humans because their bodies are better conductors of electricity. However, other factors such as mistreatment, uncomfortable stalls, milking machine problems, slippery floors, disease, sanitation and nutritional disorders can create problems similar to the responses outlined above. Commonly cited cattle responses include, unexplained production drops, increased evidence of mastitis, elevated somatic cell counts, longer milking times, incomplete milk let down, nervousness while in the parlour, rapid exit from the parlour, reluctance to use water bowls or metallic feeders and altered drinking habits, e.g. When cows come in contact with two surfaces that are at a different potential (voltage) a current will flow through the animal.Ī variety of cow responses to stray voltage have been reported from farm surveys in other countries. It can also be transmitted through liquids. It can exist between the structure and the floor, the structure and installed equipment or between the floor and the equipment. It occurs as small voltage differences, generally less than 10 volts, between various parts of buildings. ![]() In Ireland it is mainly referred to as stray voltage. Stray electricity is known by a many different names: stray voltage, stray current, neutral-to-earth voltage, transient voltage, and metal structures-to-earth voltage.
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