Note that local electric current is 100 volts/50 (or 60) cycles, which is slightly different from the US and completely different from Europe.
The US and Europe have completely different local electric currents. 
mnli hypothesis: The US and Europe have completely different local electric currents.  premise: Note that local electric current is 100 volts/50 (or 60) cycles, which is slightly different from the US and completely different from Europe.