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Basic facts - electric power
Electric power is the rate at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt, one joule per second.
Electric power is usually produced by electric generators, but can also be supplied by sources such as electric batteries. It is usually supplied to businesses and homes by the electric power industry through an electric power grid. Electric power is usually sold by the kilowatt hour (3.6 MJ) which is the product of power in kilowatts multiplied by running time in hours. Electric utilities measure power using an electricity meter, which keeps a running total of the electric energy delivered to a customer.
Electrical power provides a low entropy form of energy and can be converted into motion or other forms of energy with high efficiency
Źródło: https://en.wikipedia.org/wiki/Electric_power
Electrical installations
Especially in the case of large buildings electrical systems play a huge role. At the beginning should be designed and adequately equipping workers with the necessary wiring and mounting items. The installation itself mains also require supervision by a competent, highly qualified staff having qualified electrician. During the installation of electrical systems at the construction site should remain authorized persons, regardless of whether they plan to put electrical installations in the home or in a big high-rise. In each place is a risk that there is a dangerous situation is the same.
What is the most common faults in the house?
The most common electrical problems are not only problems with non-smoker a light bulb, but most of all trouble with broken cables. While the independent replacement bulbs is not a problem for most people, so much electrical installations in the home can no longer cause a problem. A good solution if you notice a fault electrical system is to call a professional electrician. For every independent action of electricity without adequate knowledge on the subject may end up even tragically. Therefore, it is worth to invest and be sure that our system has been running smoothly, and we use the electrical appliances in the home are completely safe.