Sparky,
The connection to ground is not what is important here. The bonding of everyting together to make sure there is no voltage between anything that the cows can contact is what needs to be done. That means the concrete must be bonded to the electrical system. Cows are very sensitive to small amounts of voltage and it will cause loss of milk output.

Virgil,
The voltage gradient ramp is a system to reduce any stray earth voltage between the inside and outside of the barn to a level that the coew can't detect. It is often accomplished by installing conductive rods bonded to the building bonding system on a 30° to 45° angle into the earth at the entrances to the building. The deep end is away from the building. This should reduce any voltage gradient to a level that the cows won't feel. Remember that the step potentional for a cow is between front and back feet.
Don(resqcapt19)


Don(resqcapt19)