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Voltage is stepped up to higher voltages for transmission in a power transmission system in order to reduce the current required to deliver a certain power and, as a result, to reduce the size of the conductors required.

Remember that power is current times voltage, so increasing the voltage allows a reduction in current for the same amount of power. Also, remember that the size of the conductor is proportional to the amount of current alone.

At the receiving substation, the transmission level voltage is stepped down to a distribution level voltage, typically in the range of 11 to 13KV. It is then stepped down to service level voltages at the local distribution transformer serving a business or a group of residences.

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Q: Electricity in power stations is generated at 25 000 volts why is it transmitted across the National Grid system at 132 000 volts?
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How is hydroelectric energy be used in homes and businesses?

Whether the electricity is generated by conventional power stations, or hydroelectric power generation, the electricity used in homes and businesses will still be the same, and used the same.


Why were power stations built?

To produce electricity


Most of the electricity used in the world is generated by?

The majority of electricity is generated from fossil fuels, coal, oil and gas. Fossil fuels need to be replaced by other sources as the resources we rely on are becoming more scarce. Increasingly, renewable energy sources are being used such as wind, solar, hydro-electric, tidal but these represent a small percentage of the total generation. Nuclear power has had its share of problems but in the twenty first century, it is making a comeback. Better controlled and safer than early nuclear power stations, new stations are being constructed.


Why would it be advisable for a householder to remain connected to the national grid?

So that, as a user of electricity, he or she does not have to rely on only one local power generating station. A National Grid is a network of electricity supply lines carrying power from various generating stations There is usually more than one supply line to most points (or grid nodes), from more than one generating station. So, by using a National Grid, users can continue to receive power from the other power stations in the network whenever a power station or a distribution sub-station has to be taken out of service for maintenance work or when some power lines are destroyed by bad weather.


Are satellite TV stations going to be broadcast in digital?

Satellite broadcasters such as direct tv and dish network have all ways transmitted digital from day one.

Related questions

What is the job of a dynamo in the national grid?

A dynamo is a device that generates electricity by converting mechanical energy into electrical energy. Within the national grid, dynamos play a crucial role in power plants where they produce electricity that is then transmitted and distributed across the grid to meet the electricity demands of consumers.


When is electricity made?

Electrical energy is mostly generated at the same time as it is used, in other words, all the time 24/7/365. Electricity for powering our homes is generated in power stations.


Where is electricity generated for cities and towns?

Electricity is generated for cities and towns at power plants, which can be located either near the city or in remote areas. These power plants use various sources such as fossil fuels, nuclear energy, hydroelectricity, wind, and solar energy to produce electricity. The electricity generated is then transmitted through power lines to homes, businesses, and other buildings in the city or town.


How the UK make electricity?

The majority of he UK's electricity is generated by coal or gas-fired power stations. We also use nuclear power, wind and wave generators.


Why are hydroelectric power stations not very useful in a drought?

Because in a drought there is not enough water to drive the turbines. So no electricity is generated.


How electricity energy is transferred to home and industry?

Electricity is generated at power plants using various energy sources like coal, natural gas, or renewable sources. It is then transmitted through power lines to substations, where the voltage is reduced for distribution. Finally, the electricity is delivered to homes and industries through a network of power lines and transformers.


How is hydroelectric energy be used in homes and businesses?

Whether the electricity is generated by conventional power stations, or hydroelectric power generation, the electricity used in homes and businesses will still be the same, and used the same.


What electricity is used in India?

India uses Nuclear Powerplants as major sources of it Electricity. It also has a few coal stations and some water turbines at a few dams. But 80% of electricity generated in India is actually nuclear energy.


Is the world's largest supply of electricity generated by powerstations?

Yes, mostly by fossil fueled power stations running on coal, oil, natural gas and nuclear.


How do natural gas stations produce electricity?

"How do natural gas stations produce electricity?


How is energy transferred from power stations to your home?

Energy is transferred from power stations to your home through the electrical grid. Power stations generate electricity, which is then transmitted at high voltage through power lines to substations. At the substations, the voltage is reduced for safe distribution to homes and businesses through power lines, eventually reaching your home through outlets.


How do nuclear power stations operate?

Nuclear power stations generate electricity by using uranium fuel to heat water, producing steam that drives turbines connected to electric generators. The heat produced by the nuclear reaction is controlled to ensure safe and consistent power generation. The electricity generated is sent out for distribution to the grid for use in homes and businesses.