Japan is one of the few countries using 110V still. That said, for most modern devices, 100V to 130V is no problem and an expected deviation. Similarly, 220V to 240V can basically be considered identical for most devices designed for any of those markets. 110V vs 220V. A lot of people are mistaken regarding 110 vs 220. They think that they save on electricity using 220V. Because it uses half the amperage compared to 110V. However, they don’t understand one detail. A lower amperage in the 220V is possible because it basically uses twice the voltage.

I have a well with a 1.5 HP pump. The pump is rated for 240V input. At the moment, the only nearby available power is 4-wire 208Y 3phase. I am considering connecting two of the three phases to the

Normally this type of resistor is using when the Dimming led light is in off condition , therefore we use this type of resistor with high wattage capacity In your case 220V AC is applied and 100K Resistor is using I= 230/100000 = 2.3mA In case current is very small but u need wattage capacity so power it is required P= I2 x R = 2.32.3 x 100000
That is the only reason to chose one or the other. If your facility has 480V, use that, there is zero reason to buy a transformer to make 230V. If your facility has 240V, installing and running power through a transformer to run the motor at 460V more than negates ANY possible savings on wire size or I^2R losses.
Oct 23, 2012. #4. erickench said: No. It would have to be a 240 Volt system. The reason why it's rated at 220 volts is because of the voltage drop in the branch circuit conductors. I will not say that is necessarily wrong, but I find it more common to see equipment (especially motor driven) rated for 230 volts with that being the likely reason
208V is a line to line voltage of a 208/120Y system. 220V is a line to ground voltage of a 380/220Y system. 240V is the line to ground of a 415/240Y system. The important dfference, othere than maybe having too high or low a voltage, is that one of the input leads is either ground referenced or both are hot. The standard electric outlet in the United States is 120V and will be able to directly power fans that have 120V within its range such as 110V, 115V, and 120V AC fans. For example, a fan might state 220V on its label but it will be able to run on a 230V power source. Europe uses 230V as its standard for electricity. One other important difference between 3-phase power vs. single phase power is the consistency of the delivery of power. Because of the peaks and dips in voltage, a single-phase power supply simply does not offer the same consistency as a three-phase power supply. A three-phase power supply delivers power at a steady, constant rate. 933X.
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    • can i use 230v in 220v