How do you figure out the distance required for a 3-point fall of potential test? I've heard you should drive your C2 anywhere from 3 to 10X the diagonal of the grid but I've seen other literature that give tables showing different values based on different distances.

To keep things simple, let's say we had a building that was 100' x 200', how far out would you take your leads?

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This slide shows 10X diagonal.

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This slide shows non-linear percentages.