Which is more dangerous, ie kills more often: US low voltage mains current or grounded UK and European relatively high voltage systems, 220/240 volts that run on half the amperage?
For an example, you can use water. If it has 100m^3 of water in it, but it's moving very slowly, it can be perfectly safe. If it's moving very quickly, like through a fire hose, it can be very dangerous.
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