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240 v has been found to be a useful voltage because a lower voltage requires more current and therefore thicker wires, which requires more copper sitting around.
On the other hand, too high a voltage is dangerous for the users. So a middle voltage has to be found.
America uses 120 v for house supplies, usually with split phase so that two live 120 v wires can be used to supply 240 v to high-power units like air conditioners. Each live wire has a voltage of 120 v to ground.
In Europe and other places the single-phase supply is 220-240 v with a live an neutral conductor to carry the current, and a separate ground wire to connect the external surfaces of all pieces of equipment to ground.
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What is the voltage supplied to Australian homes?
230 volts
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What does input volts and output volts mean?
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When looking at voltage numbers the higher the number the higher the voltage. In regards to which voltage is higher the 3.6v (volts) or the7.2v (volts), 7.2 is higher.
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