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How it Works

Generators are used as an alternative source of electricity when power from the main grid is interrupted. Generators can be used for backup power in homes, industries, businesses, hotels and workshops. They are also used as the primary source of power where electricity is unavailable for instance in farming, construction and mining projects.

Generators are available in many different sizes with different power outputs. There are small portable generators used for powering just a few devices. There are also huge permanently installed generators used to power industries and entire homes. The choice of a generator to buy depends on your needs.

How do generators work?

Generators convert mechanical energy into electrical energy as the output. They operate on the principle of electromagnetic induction that was discovered by Michael Faraday. In his principle he found out that moving an electrical conductor in a magnetic field could induce flow of electrical charges from one side of the conductor to the other. In the generators, there is a copper wire (conductor that provides the electrical charges) inside a magnetic field created by two strong magnets. The strength of the electric

current produced is proportional to the rate of change of the conductor through the magnetic field. This means therefore mechanical energy to rotate the conductor is required so that it cuts through the magnetic field so many times in a second.

This is where the fuel comes in. The diesel, propane or biofuel used in the generator rotates a shaft that in turn rotates the electric conductor through the magnetic field. This rotation causes electric charges in the conductor to flow as electricity.

The main components of a generator that enable this to happen include; alternator, radiator, engine, source of fuel, battery charger, cooling and exhaust systems, air filters and oil filters. All of these parts are combined and held together by the main frame and operated through a control panel.