In the UK, the very large steel electricity pylons that you see stretching across the countryside carry around 400,000 Volts of electricity.
There is a directly proportional relationship between Voltage and Current - Increase voltage = Decrease in current and vice-versa.
The 400,000 volts in these primary power lines from the electricity generating stations is necessary in order to transmit the electricity over large distances without too much energy being lost as heat. If the voltage was lower then the current would be higher and much thicker cables would be needed to carry the energy without too much heat loss.
The 400,000 volt lines feed into Sub-Stations which are basically huge Transformers which step the voltage down to around 140,000 volts. The energy is then fed across smaller distances and along a number of routes to smaller sub-stations.
The next sub-stations step the voltage down to around 66,000 and/or 33,000 volts which in turn gets transmitted to smaller sub-stations still.
The next sub-stations step the voltage down to around 11,000 volts ... these are the smallest overhead power lines that you generally see running between the large wooden poles across the fields and around the outskirts of cities & towns.
Many 11,000 volt lines drop down into under-ground cables once they reach heavily populated areas like towns & cities simply due to the impracticability of overhead lines close to buildings.
The higher the voltage, the easier it is for the current to "jump" causing sparking or continuous arcing. 11,000 volts can quite easily spontaneously jump over a 1 metre gap in air and that distance can be increased dramatically if there is a high moisture content to the air.
The final stage - The 11,000 volt lines arrive (usually underground in towns/cities - overhead in more rural areas) to their final dropping transformers or mini sub-stations
where the energy gets dropped to it's final working voltage - 415 volts - 3-phase for commercial usage (Industrial estates etc') and 240 volts single phase - 240 volts for domestic use in your home.
120 volts is a common domestic level in many countries around the world and the voltages/step-down levels may vary accordingly but the principal is the same for the transmission of electricity across the board - very high voltages in the HT (High Tension) lines emanating from the generating stations - stepping down through a series of transforming sub-stations across the electricity grid until they reach the final LV (Low Voltage) lines which supply the end users.
It is also interesting to note that there are many safety devices throughout the grid at all levels ranging from huge one-shot fuses which blow with the aid of a small explosive charge to compressed gas activated remotely operated switches to devices known as Re-Closers which will trip out in the event of a short-circuit but which will automatically try to re-connect after a pre-designated time (usually 2 to 3 minutes) - most of these Re-Closers will only attempt to re-establish supply 2 or 3 times before tripping out subject to a manual (or in some cases remotely activated) reset once the source of the problem has been located and rectified by engineers.
Automatic Re-Closers can be useful in cases where for example, a small tree branch drops onto the overhead lines tripping the Re-Closer but bounces off causing only a temporary short-circuit. In this case, the Re-Closer will restore the supply to consumers very quickly without the expense of, or the need to wait for, engineers to come out to inspect the lines and restore the supply manually.
Electricity is generated at power plants and then transmitted through power lines to substations. From there, it is distributed to homes and businesses via power lines and transformers. When electricity reaches your home, it goes through a circuit breaker or fuse box before being distributed to outlets and appliances.
Electricity travels from the source, typically a power plant or generator, through transmission lines to a substation. From the substation, it is distributed through distribution lines to the load, such as a home or business. Once the electricity powers the load, it flows back through the system to complete the circuit.
Lightning is a natural discharge of electricity that occurs during a thunderstorm, while the electricity used at home is typically generated by power plants and delivered through power lines. Lightning is much more powerful and occurs sporadically, while home electricity is a controlled and consistent source of power for our daily needs.
Power is generated at the power plant. It is then sent to a step up substation where the voltage is stepped up to several hundred thousands of volts to reduce amperage and keep the power lines from melting, then closer to your home it goes to a step down substation where the voltage is reduced and amperage is increased again. these are the power lines most commonly seen, then it goes to the transformer outside your house on the light pole where the voltage is greatly reduced yet again and turned into single phase 240 volts, it then goes from the transformer to the electric meter on your home, from there it goes into a breaker box and can be used as 240 volts or split into 110 volts depending on its application.
I did once live in a house with direct current supply (I assume that is what you are referring to.) I could not use my electric razor! Nowadays I shouldn't think there are many parts of well developed countries that use DC, almost everywhere uses Alternating current (A.C.)
to send power through them so that electricity can get to your home
Electricity generated at a power plant is transmitted through high-voltage power lines to substations. At the substations, the voltage is reduced for distribution to homes through local power lines. The electricity enters your home through the meter and electrical panel.
A power company thyough their mains wires.
Electricity is exported from the electrical power station that produces it and is imported into your home or business that uses it. This is done by way of electrical power lines and electrical sub stations.
your electricity in your home comes from wires under ground or on power lines. it comes from the power company that gets it from wind, solar, nuclear, hydroelectic dams, or from burning coal.
Higher voltage and effectively unlimited current.house wiring is 120V to 240Vneighborhood distribution power lines are 1000V to 5000Vcity and industrial distribution power lines are 20,000V to 50,000Vintercity high tension transmission power lines are 100,000V to 1,000,000V
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.
Distribution lines
Through the national electrical grid that is composed of conductors to feed individual homes.
Power lines ( above ground or below, hidden,) carry power into the houses. they normally are underneath the ground, that's why you have to be carefull digging, you could hit power cables.
Electricity is generated at power plants and then transmitted through power lines to substations. From there, it is distributed to homes and businesses via power lines and transformers. When electricity reaches your home, it goes through a circuit breaker or fuse box before being distributed to outlets and appliances.
Electricity generated at a power plant travels through transmission lines to substations, where it is stepped down to a lower voltage for distribution. From there, the electricity flows through power lines to electrical outlets in your home or building, providing the energy you need to power your devices and appliances.