If the voltage was coming from a pool light in the deep end to the grounded pool drain, there would be a voltage gradient between the two in the deep end.
If I swam in the shallow end then I would not experience the voltage gradient and therefore not get shocked.
I my scenario, if I was treading water over the drain the gradient would be larger than if I swam over the drain. April 4 2016, 9:25 am EDT
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