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International standards in electrics and the organization behind them
The International Electrotechnical Commission (IEC; in French: Commission électrotechnique internationale) is a non-profit, non-governmental international standards organization that prepares and publishes International Standards for all electrical, electronic and related technologies ? collectively known as "electrotechnology". IEC standards cover a vast range of technologies from power generation, transmission and distribution to home appliances and office equipment, semiconductors, fibre optics, batteries, solar energy, nanotechnology and marine energy as well as many others. The IEC also manages three global conformity assessment systems that certify whether equipment, system or components conform to its International Standards.
The IEC charter embraces all electrotechnologies including energy production and distribution, electronics, magnetics and electromagnetics, electroacoustics, multimedia, telecommunication and medical technology, as well as associated general disciplines such as terminology and symbols, electromagnetic compatibility (by its Advisory Committee on Electromagnetic Compatibility, ACEC), measurement and performance, dependability, design and development, safety and the environment.
Źródło: https://en.wikipedia.org/wiki/International_Electrotechnical_Commission
The job of master electrician - by Wikipedia
In theatre, the master electrician (or chief electrician in the UK) is responsible for implementing the lighting design for a production drawn up by the lighting designer. This involves overseeing the preparation, hanging, connection and focusing of stage lighting fixtures.
This can be done on a show-by-show basis, or as a resident position of a specific theatre. The tool of the trade of the theatrical master electrician is the adjustable spanner or crescent wrench, used to secure stage lighting instruments from lighting positions in the theatre. This wrench is typically attached to the belt or wrist with a lanyard, which is important because the master electrician tends to work at great height, from ladders, lift tables, catwalks, or lighting trusses, where a falling wrench may hurt people or damage property below.
Źródło: https://en.wikipedia.org/wiki/Master_electrician
Professionally decorated gardens
Electricians increasingly offer services for the repair of lighting installations in the garden. On the one hand this is due to the fact that more and more people are choosing to mount such an installation in your garden, because it is very convenient and effective solution. On the other hand, such installations are often exposed to changing weather conditions, and enters the installation of the smallest amount of, for example, rain can cause short circuits and failures. Therefore, help electricians primarily relies in this respect on the corresponding securing lighting systems, allowing users to enjoy long light without any failure.