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Step
1 -
Electricity is generated at power stations. Coal or gas is burnt
in a large furnace that boils water and changes it to steam. ENERGEX
is not a generator of electricity.
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Step 2 - This steam is then
forced through a turbine. A turbine is just like a fan except that
it has a lot more blades. If, you have ever been out to the airport
and seen inside a jet engine then you would have seen the turbine
blades. When the steam is forced through these blades they begin
to spin.
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Step 3
- The turbine is connected
to a generator, which is a coil of wire that is surrounded by large
magnets. When the turbine spins the coil of wire it produces electricity.
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Step 4 - When the electricity
leaves the power station it has to travel great distances and be
distributed amongst many different users. So that the electricity
can do this, it must be given a large 'push'. The size of this "push"
is its voltage. The electricity leaves the generator and passes
through a special device called a step-up transformer. This
transformer increases the voltage or "push" to 275,000
volts.
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Step 5 - The electricity
then travels along the high-voltage transmission network. You have
probably seen part of this as you drive down the highway. The electricity
travels along heavy cables suspended between large towers.
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Step 6 - Once the electricity
reaches a town or city the voltage has to be reduced. This is achieved
by a step down transformer, which reduces the voltage. Local
distribution companies, like ENERGEX, convert the electricity to
lower voltages and deliver it from the system to your home using
a low voltage network - the poles and wires you see along your street.
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Step 7
- Electricity retailers
are the link with customers. The electricity retailer is the company
you buy your electricity from and provides the associated customer
services . As such, ENERGEX is also a retailer. To be able to provide
electricity, the retailer deals with several links in the chain
- they buy electricity from generators and then they use the local
distribution network to carry the electricity to your home.
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Step 8 - Before
the electricity enters your house, the voltage is reduced once more
by a step-down transformer to 240 volts. This is the voltage that
is used in all Australian homes.
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