comparison between the 220v and 110v Your electric bill is based on kilowatt hours. A kilowatt hour (KWh) cost the same regardless of voltage so there is no difference in cost .between 110 VAC or 220 VAC The reason for the two voltages is that some appliances, such as your stove, dryer, water heater, draw a lot of power. A water heater is typically 4400 watts. At 110 volts this would be 40 amps. That would take a big wire. At 220 volts, 4400 watts only takes 20 amps. You don't need as big a wire for the same power. The lower current is also a little safer as the .potential heating in the wiring is reduced This is also why most 110 VAC appliances are limited to about 1200 to 1500 watts. 1200 watts on a 110 VAC circuit is just under 11 amps. 1500 watts is just over 13.5 amps. Most houses have 20 amp circuit breakers but older houses may have 15 amp breakers or fuses. You want some headroom in your fuse or circuit breaker so you don't want to draw 15

amps from a 15 amp fuse or circuit breaker or 20 amps from a 20 amp breaker . The difference is very large. 110V is normal electricity you get from your average wall plug. 220V is two-phase electricity normally for your Stove or Dryer or other high voltage .equipment If you are asking because there is a switch on a piece of equipment for this, then it's because it switches between 50 hz and 60 hz electricity. Using the WRONG setting can and WILL kill .your electronics In North America we use 60Hz, in Europe they .use 50Hz To answer your question, neither is any cheaper 'typically' but which of the two ?situations I described are you talking about

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