Electromagnetic induction is a phenomenon associated with the English physicist Faraday who discovered this in 1831, mechanical generators of all sizes are reliant on this technology of the changing of the magnetic field.

Although a generator can be as small and compact enough to power a single electrical appliance or large enough to power a whole city we are mainly concerned with emergency generators, either portable generators or standby generators also known as gensets.

If you would like more information on home generators and reviews of the best ones on the market today have a look at House of Generators,

How does electromagnetic induction come into it?

Faraday discovered that changing magnetic fields to a conducting wire produced a voltage in the wire.  When the wire forms a closed circuit a current will flow through it, this forms the principle behind electromagnetics. He also realised that the amount of electrical current produced was in proportion to the number of turns in the coil of wire.

How do generators change the magnetic field to generate electricity?

Quite simply two components working together are used to create the changes to the magnetic field to generate electricity; the stator and the rotor sometimes called the armature. The stator is a solid iron core with a conducting metal coil around, the rotor spins around it creating the changes in magnetism. The magnets in a home generator rotor will have permanent magnets. When the rotor completes a half-rotation the polarity of the generator changes and the generator produces an AC current, an alternating current.

The conversion

For smaller home generators supplying up to 5 kW of electricity the power to enable the spin action of the rotor is usually converted by a small gas powered engine.

For larger home generators, able to produce 10 kW or more tend to be powered by propane gas or diesel.

Portable generators; size, safety, noise

Portable generators are extremely flexible in that a small 900 w generator can be used for camping whilst they can go up to 17,000 kW of power!

Generators do create poisonous carbon monoxide gases which can be lethal so you do need a well ventilated area. Other safety aspects include heat and electrocution hazards plus the more obvious need to keep it dry!

Using a cover on your generator can help with the noise pollution and keep it dry.

Take a look at the link at the top of the page to see some of the best reviews and further information regarding home generators including portable and standby.

If you have invested a lot of money in your home already one of the best improvements you can make is to install a standby (genset) generator. As the price of property rises the need to be competitive in your presentation is all the more important.