Pole barn horse barn

[codeunderstanding]

I looked at a new horse barn that already has the concrete floor poured in the whole barn. Where the stalls are going to be the floor is going to have to be cut up to get a grid in there. There is foam under the concrete but that doesn't have any effect on the equipotential grounding grid does it? You can just lay the grid on the foam and pour the concrete over it to function properly as it is not acting as a grounding electrode? Does that sound right? There are going to be metal water troughs in there with heaters for the horses.

 

[gene6]

There is foam under the concrete but that doesn't have any effect on the equipotential grounding grid does it? You can just lay the grid on the foam and pour the concrete over it to function properly as it is not acting as a grounding electrode? Does that sound right?

Yes you run a #8 at minimum, the ones I have done we had #8 solid green. others we used #6 bare, not sure why, but all had the foam under the concrete.