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Fear of contact with the flow
Why do many people use the services of electricity while performing even simple repairs or replacement of components of electrical installations? This question can be answered in a very simple way - a lot of people afraid of any contact with the flow, because it can be extremely dangerous not only for health, but also for human life. Commonly known cases in which the electrician while performing their work was seriously injured and even died as a result of contact with electricity. On the other hand, many electricians have daily contact with electrical installations retains fewer and fewer safety work and then can easily lead to tragedy.
Wikipedia about electrical code
An electrical code is a set of regulations for electrical wiring. The intention of an electrical code is to provide standards to ensure electrical wiring systems that are safe and unlikely to produce either electric shock or fires. Ways in which electrical codes ensure safety include ways to prevent (or mitigate) short circuits, ground faults, and overheating from inadequate current-carrying capacity (ampacity). Appropriately rated fuses or circuit breakers are used to interrupt a circuit loop whose ampacity is exceeded to avoid overheating of wires or other fixtures. Electrical codes are usually devised by national or international technical organizations, and adopted as law to make them enforceable. Electrical codes differ based on geographic area. See the following:
DIN VDE (German Institute for Standardization) published by DIN-Norms is used in Germany
National Electrical Code has been adopted for electrical wiring in the United States and for Mexico, Costa Rica, Venezuela and Colombia
IEC 60364 is used as a basis for electrical codes in many European countries
Canadian Electrical Code published by the CSA is used in Canada (see Electrical wiring in North America).
British Standard BS 7671 is the set of regulations for electrical wiring in the United Kingdom.
Australian/New Zealand Standard AS/NZS 3000:2007 Wiring Rules is used in Australia and New Zealand.
NF C 15-100 (fr) is used for low voltage installations in France
RGIE (fr) (Réglement Général sur les Installations Électriques) is used for installations in Belgium.
AREI (nl) (Algemeen Reglement Elektrische Installaties) is used for installations in Flanders, Belgium.
Źródło: https://en.wikipedia.org/wiki/Electrical_code
Wiring safety codes - Wikipedia
Wiring safety codes are intended to protect people and property from electrical shock and fire hazards. Regulations may be established by city, county, provincial/state or national legislation, usually by adopting a model code (with or without local amendments) produced by a technical standards-setting organisation, or by a national standard electrical code.
Electrical codes arose in the 1880s with the commercial introduction of electrical power. Many conflicting standards existed for the selection of wire sizes and other design rules for electrical installations.
The first electrical codes in the United States originated in New York in 1881 to regulate installations of electric lighting. Since 1897 the US National Fire Protection Association, a private non-profit association formed by insurance companies, has published the National Electrical Code (NEC). States, counties or cities often include the NEC in their local building codes by reference along with local differences. The NEC is modified every three years. It is a consensus code considering suggestions from interested parties. The proposals are studied by committees of engineers, tradesmen, manufacturer representatives, fire fighters and other invitees.
Źródło: https://en.wikipedia.org/wiki/Electrical_wiring