what the heck are you talking about....amperage and voltage are constant in a circuit...it's the usage of said circuit that constitutes wattage consumed, they draw off of the circuit. That's why there are these things on power lines/poles called transformers, they step down voltage and amperage to a more usable form so that you don't blow your light bulbs out. power plants do not put out wattage, they produce voltage and amperage, not watts...the watts thing is the way the electric companies measure your consumption in order to bill you....