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Several reasons for different voltages. At the heart of it is that to deliver the same power, voltage and current are inversely related. The other aspect is safety.
So for the grid, high voltages are used to maximize power transmission within the current limits of the cables.
In industrial environments, equipment may require a lot of power - that requires high voltages as well
Domestic requirements are not so power-hungry so 120 or 240 volts are adequate, and are also safer (well... less dangerous) than higher voltages.
What else can I help you with?
Can you use 240 volts to 220 volts?
Each voltage has a range and devices rated in that range will all work . The 110 to 120 volts is one range of voltages. The 220 to 240 is another range of voltages. The reason there is a range of voltages is to help the utility company out. They are mandated to keep the voltages within a + or - 5% range of a set voltage. Because there are loads coming on line and loads dropping off line the voltage fluctuates. Using a base voltage of 115 and 230 volts means that the voltage can rise by 115 +5% = 121 volts and drop by 115 - 5% = 109 volts. In the 230 volt range the voltage can rise by 230 + 5% = 241 and drop by 230 - 5% = 219 volts. As you see they are still in the usable voltage ranges.
Why 220V are used in Pakistan as standard home voltage?
Because that allows a wide range of manufactured electrical goods from all over the world to be used in Pakistan. Voltages are standardised to 120 v or 230/240 v throughout the world.
How can you change a 200 volt socket into a 240 volt socket?
You do not need to. Each voltage has a range and devices rated in that range will all work . The 110 to 120 volts is one range of voltages. The 220 to 240 is another range of voltages. The reason there is a range of voltages is to help the utility company out. They are mandated to keep the voltages within a + or - 5% range of a set voltage. Because there are loads coming on line and loads dropping off line the voltage fluctuates. Using a base voltage of 115 and 230 volts means that the voltage can rise by 115 +5% = 121 volts and drop by 115 - 5% = 109 volts. In the 230 volt range the voltage can rise by 230 + 5% = 241 and drop by 230 - 5% = 219 volts. As you see they are still in the usable voltage ranges.
Does the formula used to calculate the turns ratio uses the phase voltages and phase current?
For a transformer, the turns ratio always applies between its primary and secondary windings. So the turns ratio for a three-phase transformer is the ratio of primary to secondary phase voltages, not between line voltages.
Why can't lightning be used to provide electricity for homes?
DC (dirrect current) electricity is not used in homes, because different appliances (lamps, TVs, etc.) use different voltages. By using AC electricity, each appliance can take the voltage it needs. If we used DC, some smaller appliances would constantly burn out, because the voltages are far too high.
What are the voltages used for BTS?
24volt dc
How many volts of electricity are used by an average person a day?
In North America we use 120/240 voltages for residences. 120/208 is used in smaller businesses and 240,277,347,480,600 voltages are used in industries. Directly and indirectly people use these voltages every day.
Can you use 240 volts to 220 volts?
Each voltage has a range and devices rated in that range will all work . The 110 to 120 volts is one range of voltages. The 220 to 240 is another range of voltages. The reason there is a range of voltages is to help the utility company out. They are mandated to keep the voltages within a + or - 5% range of a set voltage. Because there are loads coming on line and loads dropping off line the voltage fluctuates. Using a base voltage of 115 and 230 volts means that the voltage can rise by 115 +5% = 121 volts and drop by 115 - 5% = 109 volts. In the 230 volt range the voltage can rise by 230 + 5% = 241 and drop by 230 - 5% = 219 volts. As you see they are still in the usable voltage ranges.
What is an average voltage?
In different electric and electronic devices, voltages are used in the range of perhaps 0.5 volts to 5 million volts. So the average is somewhere in the neighborhood of 2,500,000.25 volts.
What device is used to change the scale values of an AC ammeter?
A multimeter is used in which there is options for multirange measurement of Ac current or voltages and resistances and also DC voltages
Can you use a 120 volt appliance in a 110 volt house?
Yes, the two voltages are in the same voltage range.
Why 220V are used in Pakistan as standard home voltage?
Because that allows a wide range of manufactured electrical goods from all over the world to be used in Pakistan. Voltages are standardised to 120 v or 230/240 v throughout the world.
How can a transister can amplify the voltages?
When it's assembled into a circuit with other components and a power supply, atransistor can be used to amplify changes in voltage, but it can't amplify voltages.
What are five voltages that can be produced by an ATX or BTX power supply Which voltage is seldom used?
What are the 5 voltages produced by and BTX power supply? +12v -12v +5v -5v +3.3v
Uses of transformer?
transformers are used to step up or step down the voltages
What is the voltage need for fluorescence lamp?
Fluorescent fixtures can be used with a variety of voltages.
Can a 400 Volt inverter be run on 460 volts?
The range of working voltages for a piece of equipment should be marked on the cover. If it says 400-460 v or a wider range, the answer is yes. Otherwise the answer is no.
