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Cattle deaths

lyledunn
Some 10 prize bullocks died in quick succession whilst housed over winter in a cattle shed. The government vet was unable to reach a conclusion on cause but apparently does not discount electric shock as an indirect cause. 

The shed comprises steel columns and trusses with corrugated iron sheeting over. The floor comprises re-Inforced concrete slats over the slurry tank. The pens have steel barriers supported by steel posts all of which are heavily corroded but still making contact with other albeit fortuitously.

The earthing system is TT with the shed steelwork on its own providing a substantially low impedance of 5 ohms using a loop tester. A 100mA RCD protects the rather ropey lighting circuits.defccf32df3c757507a0db6ad0a35f87-huge-a5af3537-8eae-4a3c-9126-68fa60b61ac7.jpg

whilst the floor could be wet, I can’t conceive how a voltage difference could be established even if the steelwork was at 230v

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    Shelter from lightning below trees, is a common source of fatalities for all animals in warmer climes. White, naked pine trees with bark stripped all the way down were a common sight, probably because of the lower resistance path at the bark. I suspect that the cause of the fatalities in this post, is deficient earthing and infrequent test reports, unfortunately, the cattle are the testers. I've experienced 2 instances of a loud crack and damage, inside a house and on telephones, evident during donner and blitzen, induction from a nearby ground strike can do it.  


    Jaymack.
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  • 0
    Shelter from lightning below trees, is a common source of fatalities for all animals in warmer climes. White, naked pine trees with bark stripped all the way down were a common sight, probably because of the lower resistance path at the bark. I suspect that the cause of the fatalities in this post, is deficient earthing and infrequent test reports, unfortunately, the cattle are the testers. I've experienced 2 instances of a loud crack and damage, inside a house and on telephones, evident during donner and blitzen, induction from a nearby ground strike can do it.  


    Jaymack.
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