But voltage is what counts in a shock.
Ed
Actually it is the amperage, not the volts. A static shock is thousands of volts, but not enough current duration to be fatal. As little as 50 milliamps can do it though, but would probably need at least 30+ volts to push it through your body. A GFCI outlet trips at 5 milliamps, which is checking for equal current flow on both wires, not the voltage.