- Osha electricity
- What is the danger of electricity?
- When is it possible to receive an electric shock?
- How many volts can a human being receive without being damaged?
- How are electrical hazards classified?
- How are work procedures for electrical hazards classified?
- What happens if you touch a plug?
- Industrial electrical safety
- How does electric current act on our muscles?
- When is the voltage dangerous?
- What happens if I touch 12 volts?
- Electric shock
On the other hand, the increasingly globalized environment has a special impact on electrical products, expanding their geographical origin and decreasing the presence of technical specialists due to the arrival of new sales and distribution channels. All this serves as an example of the gradual implementation in all fields of e-commerce.
Firstly, the certification process includes periodic inspection visits to the manufacturing site, which ensures the manufacturer’s compliance with the requirements of its production system. Secondly, samples of the product are tested in laboratories to verify compliance with the applicable standard, with tests being repeated periodically on samples selected during follow-up visits or directly in the market.
Regulatory environmentWithout going into detail on the increasingly dense network of different regulations affecting products for electrical installations, and focusing on the legislation with the greatest impact on the safety and functionality of the products, there are two main types of legislation affecting these products.
What is the danger of electricity?
Contact with electrical voltage can cause current to flow through the body, resulting in electric shock and burns. This can lead to serious injury and even death. When electricity is used as a power source, little consideration is given to the dangers it can pose.
When is it possible to receive an electric shock?
An electric shock occurs when a part of the body gets in the way of the circuit between conductors or the ground connection. Death or injury is caused by the amount of current and voltage surges. Avoid contact with electrical equipment, especially in wet or damp areas.
How many volts can a human being receive without being damaged?
In these cases, the human body withstands about 220-250 volts (V) and continuous currents from 2.5 to 16 amperes (A).
The current Low Voltage Electrotechnical Regulations, approved by Decree 2413/1973 of September 20, 1973, represented a considerable advance in terms of technical rules and established a regulatory scheme, based on a framework regulation and complementary instructions, which developed specific aspects, which proved to be highly effective, so that many other regulations were made in a similar format.
The Regulation approved by this Royal Decree and its complementary technical instructions maintains the aforementioned scheme and, as far as possible, the order of the previous Regulation, in order to facilitate the transition.
The main novelty of the Regulation consists of the reference to standards, insofar as they are eminently technical prescriptions and, especially, characteristics of the materials. Since most of these standards come from European EN and international IEC standards, technical solutions in line with those applied in the most advanced countries and reflecting a high degree of consensus in the sector are quickly available.
How are electrical hazards classified?
There are two types of electrical hazards: risk of electrocution and risk of fire. Electrocution occurs when a person suffers a cardiorespiratory arrest due to an electric shock, in most cases resulting in death.
How are work procedures for electrical hazards classified?
The work procedures against electrical hazards are classified as follows: General and specific to the installation. Work without voltage and work with voltage. Low voltage and high voltage.
What happens if you touch a plug?
In mild cases of electric shocks, only a slight tingling of the skin may be felt. But higher currents can cause mild to severe burns, muscle contractions and even convulsions. This is because the nerves and muscles are overstimulated.
Industrial electrical safety
Royal Decree 683/2011, of May 13, which establishes six certificates of professionalism of the Electricity and electronics professional family included in the National Directory of certificates of professionalism and updates the certificate of professionalism established as Annex III in Royal Decree 1214/2009, of July 17.
Law 56/2003, of December 16, 2003, on Employment, establishes, in its Article 3, that the Government, at the proposal of the current Ministry of Labor and Immigration, and after a report from this Ministry to the Sectorial Conference on Employment and Labor Affairs, is responsible for the preparation and approval of the regulatory provisions in relation to, among others, occupational and continuous vocational training at the state level, as well as the development of such regulations.
For its part, Organic Law 5/2002, of June 19, 2002, understands the National System of Qualifications and Vocational Training as the set of instruments and actions necessary to promote and develop the integration of vocational training offers and the evaluation and accreditation of professional competences. The main instruments of this System are the National Catalog of Professional Qualifications and the procedure for their recognition, evaluation, accreditation and registration. In its article 8, the Organic Law 5/2002, of June 19, establishes that the certificates of professionalism accredit the professional qualifications of those who have obtained them and that they will be issued by the competent Administration, with official character and validity throughout the national territory. Furthermore, in its article 10.1, it indicates that the General State Administration, in accordance with what is established in article 149.1.30.ª and 7.ª of the Constitution and after consulting the General Council of Vocational Training, will determine the titles and certificates of professionalism, which will constitute the offers of vocational training referred to the National Catalog of Professional Qualifications.
How does electric current act on our muscles?
Direct consequences: immediate effects may be thermal effects (arc or contact burns) or muscular and nervous effects (cramps, muscle contractions, tetanization of breathing muscles, ventricular fibrillation, inhibition of nerve centers).
When is the voltage dangerous?
What is a dangerous amount of voltage? The shock hazard generally starts around 30-40 volts and increases as the voltage increases.
What happens if I touch 12 volts?
You won’t feel anything! The resistance (impedance) of dry skin is so great, that a voltage of 12V DC makes a ridiculous intensity flow in the body, which does not produce any sensation (you do not notice it). The horny layer of the skin is a good protection against electricity (up to a certain voltage).
The effect of an electric shock depends on the amount of current flow and the path of the current in the victim’s body. Some people have survived shocks of several thousand volts, while others have died with 12-volt shocks. To prevent electric shocks, which can cause various types of injuries, be sure that the body does not become part of the electrical circuit and become the path of the current.
An important step in electrical safety is to know how to help a victim of electric shock. Frequently, in some cases of low voltage, victims are not able to free themselves from the current. This can be done by disconnecting or removing power from the circuit.