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The amount of energy used is really unrelated to voltage. The energy usage of a piece of equipment is related to the work done, and/or heat generated by that piece of equipment. Electrical power is equal to the voltage times the current (amperage). At 240 volts, the same amount of energy is produced using 1/2 of the current (amperage) draw than is required at 110 V. For instance, a 1200 watt appliance will require 10 amps of current at 120 V (120V x 10A = 1200W). The same appliance will require 5 amps of current to do the same job at 240 V (240V x 5A = 1200W). The energy usage (1200W x time) is the same in both cases.
Wiki User
∙ 14y ago
Wiki User
∙ 15y agoThe energy used by an electrical appliance is not only determined by its voltage but also by its electrical resistance.
It is very easy to ask this question but to give a useful answer to it, keeping it as simple as possible by not using many technical terms - yet still giving an adequate explanation - is much more complicated to do.
But here goes:
Electrical appliances which require 110-120 Volts may or may not use more energy than appliances which require 220-240 Volts. It is impossible to say without knowing more about the kinds of appliances being asked about and what energy or power they take.
Appliances which need to use a high amount of energy - such as water heaters, clothes driers and kitchen ranges or ovens - are often designed to use 240 Volts instead of 120 Volts because using 240 Volts means that the Current taken would be only half what it would be at 120 Volts to deliver the same amount of Energy or Power.
Being able to use a smaller current is important because it means that thinner wiring and smaller circuit breakers can be used to supply the appliance than would be necessary at 120 Volts.
Ohm's Law can be used to figure the current taken at any voltage if you know the resistance of the appliance:
I = V / R.
In words, Ohm's Law says:
Current "I" (measured in Amps) is equal to = Voltage "V" divided by Resistance "R" (measured in Ohms).
The Energy or Power taken by an appliance, measured in Watts, is given by the Power formula where Power is "P":
P = V x I
In words, the Power formula is:
Power (in Watts) is equal to Voltage "V" multiplied by Current "I" (measured in Amps).
For more information please see the answers to the Related Questions shown below.
Wiki User
∙ 12y agoThe amount of electricity that an appliance uses is governed by the wattage that the appliance is rated at. This is indirectly governed by the amount of amperage that the appliance draws which is indirectly governed by the resistance in ohms that the appliance has. As to the frequency of the appliance, this has no direct bearing on the electrical consumption. A formula to keep in mind is Watts = Amps x Volts.
Wiki User
∙ 13y agoThe frequency is unrealted to the energy. In electricity, energy = power x time, and power = voltage x current.
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You observe a small plaque on an electrical appliance that reads in part 115 volts AC 60 Hz This means that the appliance?
That the appliance does not need a electrical transformer and uses the US standards for electricity off the grid.
How much electricity does it use?
As long as IT is functioning correctly, IT will use exactly the amount of electricity It was designed to use.
What is the Frequency residential electricity in USA?
60 Hertz
If electricity has a frequency of 60Hz it?
The frequency is 60 Hz in the USA.
How much electricity does a 700 watt small heater use in 5 min?
700/(60/5)= 58.333 Wh 58.333/1000= 0.0583 kWh
You observe a small plaque on an electrical appliance that reads in part 115 volts AC 60 Hz This means that the appliance?
That the appliance does not need a electrical transformer and uses the US standards for electricity off the grid.
How wide a fluctuation can there be in a 60 Hertz appliance?
When electrical power is generated there is no fluctuation of the frequency. It is either 50 or 60 Hertz depending on where you live in the world. It is the mandate of individual generation stations to maintain this one standard. As for the question some appliances can be operated on the other frequency some can not. It is in your interest to read the nameplate of the appliance and use the frequency that the appliance was designed for.
How much electricity does it use?
As long as IT is functioning correctly, IT will use exactly the amount of electricity It was designed to use.
How much would a plumber cost to have your new washing machine installed?
I would not pay him any more than 60 dollars to deliver and install the appliance. If the appliances on site no more than 29 dollars. ( Source appliance sales in install for 20 + years)
Is there a step up transformer that I can purchase to use a 220V 50Hz 13A kitchen appliance in a regular kitchen in the US?
A transformer will not change the frequency. 50 Hertz in 50 Hertz out. 60 Hertz in 60 Hertz out. Transformers main purpose is to change one voltage value to different voltage value. Depending on what the kitchen appliance is and whether it has a motor involved in its operation, the appliance could be connected to the 240 volt North American distribution supply. If the appliance was identified, an answer of yes or no could be supplied.
What is the hourly rate appliance repair?
ussaly it is flat rate, but it is around 60$
Can you use 220 V with 60 Hz appliances from South Korea in US with 240 V outlets?
If the appliance is 220 volt 60 Htz, yes it will work perfectly in the U.S. plugged into a 240 volt outlet.
Is it safe to use 230 volts 50 hz appliances where power supply is 230 volts 60 hz?
If the appliance is strictly resistive heating there will be no problem. If the appliance has a motor load connected with it, the unit will operate a bit slower and operate a bit warmer.
How does a refrigerator use electricity?
It really depends on the size, age, type, brand, etc. But typically, year 2009 refrigerators use between 450-600 kWh/year (and some go well over 700 kWh/year). Larger fridges tend to use more electricity, but some brands are better than others. Try to get an EnergyStar appliance and you should be able get a large 28 cubic fridge that uses around 550 kWh/year which should equal under $60 a year to operate (depending on your electricity costs), which isn't too bad. There are also compact mini fridges and extra large built-ins that could vary in electricity, so it's best to just look up the fridge you are interested in knowing about and check out their website (or the Specs on a store's website). That should tell you how much electricity it uses.
Can you use UK appliances in the us?
Not unless the appliance is rated to be used with the two different power supplies. The US uses 120v, 60 Hz if it plugs into a receptacle, and possibly 240v, 60Hz if it is hard wired. The UK uses 240v, 50Hz whether it plugs in or is hard wired. These two power systems are NOT compatible. You may use a US appliance in the UK, and vice versa, only if the appliance is dual rated, i.e. the appliance says 120v/60Hz AND 240v/50Hz on the nameplate. If the appliance only specifies one power supply, it can only be used on that power supply. If this is the case, you may be able to use a travel adapter to operate the appliance.
What is 60 cycles on lcd TVs?
60 is part of the power requirements of the TV set. You can't use this TV in a country that has 50 hz electricity. (50 cps)
What electricity ranges are dangerous to humans?
According to Wikipedia, the electricity ranges that are dangerous to humans are those more than 30 mA (60 Hz). Shocks that strong can seriously damage your tissues.
