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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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    A team from the DNO were on site yesterday. I was there as well but little in the way of communication between us as I imagine they realise that litigation is likely. Nonetheless the engineer did say that all was sound on their side with both the HV and LV earths falling well within their 40/20 ohm requirement. In fact the LV earth was recorded at just under 12 ohms. Not sure how the measurements were taken but my loop impedance test on the shed steelwork with all other earths disconnected was just below 5ohms. The shed in question is quite some distance away.
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    A team from the DNO were on site yesterday. I was there as well but little in the way of communication between us as I imagine they realise that litigation is likely. Nonetheless the engineer did say that all was sound on their side with both the HV and LV earths falling well within their 40/20 ohm requirement. In fact the LV earth was recorded at just under 12 ohms. Not sure how the measurements were taken but my loop impedance test on the shed steelwork with all other earths disconnected was just below 5ohms. The shed in question is quite some distance away.
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