Although electricity had been known to be produced as a result of the chemical reactions that take place in an electrolytic cell since Alessandro Volta developed the voltaic pile in 1800, its production by this means was, and still is, expensive.
In 1831, Michael Faraday devised a machine that generated electricity from rotary motion, but it took almost 50 years for the technology to reach a commercially viable stage.
In 1878, in the US, Thomas Edison developed and sold a commercially viable replacement for gas lighting and heating using locally generated and distributed direct current electricity. The world's first public electricity supply was provided in late 1881, when the streets of the Surrey town of Godalming in the UK were lit with electric light.
This system was powered from a water wheel on the River Wey, which drove a Siemens alternator that supplied a number of arc lamps within the town.
Whilst the Godalming and Holborn Viaduct Schemes closed after a few years the Brighton Scheme continued on, and supply was in 1887 made available for 24 hours per day. In early 1882, Edison opened the world?s first steam-powered electricity generating station at Holborn Viaduct in London, where he had entered into an agreement with the City Corporation for a period of three months to provide street lighting.In time he had supplied a number of local consumers with electric light.
The method of supply was direct current (DC).
Use cabinets with electrical components is very common not only in houses, but mainly in industrial production.Electrician, who was called on to repair such equipment thanks to a closet containing the majority of the electrical installation saves time looking for a place where there is a fault.
With such a huge production, reaching sometimes up to tens of tons per day, continuous supervision of the relevant parameters of devices working in the production plant is necessary.
It allows not only to maintain the proper functioning of electrical appliances and any other, but also a very quick response when a possible failure.Many equipment manufacturers have to be plugged in to be able to work freely, and therefore supervision electrician on a given device is necessary..