which is better 110volt or 230volt?
820597
It all depends on what you are operating and why. 230 volt runs slower making it more energy efficient. That is why, as an example, pool equipment runs on 230, as opposed to 110. It needs to run for longer periods of time, stays cooler to last longer, thus saving you more money! But the energy companies you get your electricity from don't want you to know that. They would lose money. That is why pool pumps can run either way, fast and more sucking power or slower and more energy efficient. But, the washing machine and refrigerator are both 110 volt, the most expensive appliances to run in a household. They both run for long periods of trime. You do the math and say what is better.
368541
Probably yes.\n\nFor general purposes, any voltage from 110V-130V can be considered the same thing.  Same for any voltage from 208V-240V.  The variations are due to many factors including distance from the outlet to the nearest transformer, capacity of the circuit, other attached devices, etc.\n\nMost devices today are capable of handling the seemingly wide variance in voltages. (e.g. a device rated for 220V can handle any voltage from 208V-240V.)
491871
Many different resources are available to you. \nApproximately 3,220\n\nTop hit: See below.
129261
Kilowatts  Equations\nDirect Current  =        I x E/1000\nAC / 1phase 115v or 120v =I x E x PF/1000\nAC / 1phase 208,230, or 240v= I x E x PF/1000\nAC 3 phase All Voltages     =    I x E x 1.73/1000\n\nE = Voltage \nI = Amps \nPF = Power Factor
501877
The 1800 has double the energy emission but both are pretty much negligable to the human anatomy\n\nAnd no, being near microwave-oven frequencies doesn't matter. Many many wireless consumer items use the 2.4ghz frequency and no ones brain is being fried.... unless you're infront of the tv 12 hours a day... but that's a differnet story
745468
Easy!\nIf the input is the same(1.1kW) it depends on their performance.
679718
The deciding factor here would be the Utility Company Service Entrance. THAT cannot be rewired by you! The other two points ( Low side of transformer and Motor Windings) can easily be configured either way by simply rewiring the 3 windings on the motor, and the 3 windings on the output of the transformer.\n\nOptimum efficiency will be DELTA-DELTA-DELTA or STAR-STAR-STAR...Either way no 'ground loops' to cause loss.
873132
What sort of prints? What sort of current do you want to source? How few milliviolts do you want?
877669
http://froogle.google.com/froogle?q=220+volt+,+20Kw+generator&hl=en&lr=&safe=off&sa=X&oi=froogle&ct=title
9252
There used to be "B" batteries in antique portable radios.  I believe that they were 45 Volts DC and were used to power vacuum tubes.  They are no longer needed for radios that plug into 110 Volt AC because a transformer can be used to obtain any needed voltage.  Radios that use chips need far less voltage than a B battery.  Incidentally it was called a battery because the casing contained multiple cells connected in series to boost the voltage, just as a cannon battery needs more than one cannon.  But see the source.
1130014
V=IR\n\nWire 1:\n50 = 2 * R1 => R1 is 25 ohms\nCurrent = 2 amps\npower = V*I = 2*50 = 100 watts\n\nWire 2: \n100= 2* R2 => R2 = 50 ohms\nCurrent=2amps\npower = V*I = 100*2 = 200 watts\n\nare you looking for ratios when you say "compare" ?\nif yes: ratio of resistances is  1:2\nratio of currents is 1:1\nand ratio of power is 1:2
579021
I think you meant WATTS versus volts. You will need to inspect your power supply for that information.\n You need to check out he following website, for more info on what you will truly need 250W sounds a bit low by today's standards - http://www.jscustompcs.com/power_supply/
1028004
Window units run off of 110 voltage x 2 = 220 voltage. Central air runs off 220 voltage. Central air circulates much better than window units. I'd opt for central air.
609875
first of all, 120/240 are standard voltages for AC power, not DC.  DC comes in all flavors.\n\nanyway: 2500 kilowatts DC?\n\nthat is 2.5 MEGAwatts.  \n\ni find this somehow hard to swallow.  when i worked at a particle accelerator there was ONE really big DC power supply that put out something like 1.5 megawatts.  it was the size of a small apartment, and required massive amounts of water cooling, was entirely custom built, and probably cost something on the order of a million dollars or more.\n\ni don't think there is any such thing as "usual" for a 2.5 megawatt power supply.  think about it - you're talking about nearly the power consumption of a small town.  anything liek that would have to be custom built.\n\n----\n\nok, having seen your additional details:\n\ni'm quite positive it's AC, not DC.  it also probably depends on what kind of generator it is.  to give you a rough estimate, here's an example of a 11.5MW turbodiesel generator on a cruise ship:\nhttp://www.ship-technology.com/projects/destiny/\nnote the output is at 6.6kV.  that would set the current at the output at around 1.8 amperes.  \n\nhere's some more information.  as you can see there is no real "usual".  \nhttp://www.ship-technology.com/contractors/electrical/abb2/\n\ncheers!
615599
Operating 60Hz appliances at 50Hz or viceversa may result in excessive heat buildup in transformers or in certain types of electric motors. \nIf you wish to safely operate 115V 60Hz appliances at 115V 50Hz then the following steps can be attempted: \n\nContact the manufacturer of the appliance. It may be possible to safely operate at 50Hz with the manufacturer's approval. \n\nSee if an alternate 240V 50Hz or 115V 50Hz power supply or electrical motor is available. Some manufacturers sell the same appliance or electric tool in many countries around the world and may be able to retrofit the power supply or electrical motor to 240V 50Hz. Some regions of Japan have 100V 50Hz supplies while others have 100V 60Hz supplies so it is not uncommon for Japanese manufactured electrical devices to have 50Hz solutions. \n\nIt is possible to purchase 60Hz sine wave power systems that take 240V 50Hz on input and produce 115V 60Hz on output. These solutions are generally very expensive, and it is usually more cost effective just to replace the tool or appliance. See here for a high current frequency conversion solution. \nIf these solutions, for one reason or another, do not work then there are only two further choices: dispose of the appliance or tool, or attempt to operate the appliance or tool at 50Hz and in the process potentially create a situation where the power supply or the motors in the appliance or tool are rendered non-operational.
632099
W= Volts Multiplied by Amps since we are talking about DC there is no power factor to take into consideration. One kW equals 1000 watts. So to know the current rating you would have to know the voltage.\nI have heard that the voltage on ships is 110v but am not sure about it. If it were 110v then the maximum output current would be 2,500,000w divided by 110v.\nEither way this is a big machine.
659041
as an electrician I am not surprised that none of the above know what they are talking  about.  220v uses EXACTLY half of the watt hours as 110v). This why Europe uses 220v as normal house current. (Fridge, toasters, lamps, etc, etc)  There is not a 110 outlet in Europe.  When the power company generates electricity, they pull energy from different parts of a wave.  110 only taps a wave once. 220 taps the same wave twice.  What isn't tapped is wasted.  The cost of adding a 220 outlet wherever you want it will be recompensed very quickly.  You will pay for your air conditioner and then some within three years.  Believe me.