## 1 Introduction  
People, under the influence of news/articles published in mass media, are concerned with the effects of the electromagnetic field (EMF) on human health. The present paper gives an indirect answer to the concerns of the EMF and its distribution on the area of high-voltage (HV) electrical stations.  
It is expected that in an area with a high density of high voltage equipment and circuits and in the immediate vicinity of electrical power stations, we will have high values for all EMF parameters.  
Following the systematic studies carried out in different countries, it was concluded that the biological effects of EMF generated by high-voltage installations have a pathological significance.  
Many specialists and experts are convinced that there is a close link between electromagnetic low-frequency pollution that is widespread and a considerable increase in the pathological condition known as \"hypersensitivity to electromagnetic fields\" or called Electromagnetic Hypersensitivity (EHS) [1,2].  
Today, more and more people are experiencing EHS symptoms as a result of exposure to electromagnetic radiation and EMF, coming from mobile and wireless devices [3].  
Normally, low-frequency EMF (1-300 Hz) are not considered dangerous, but if they are intense, they could become potentially dangerous [4].  
Studies have shown that in a modern world, \"electromagnetic smog\" is responsible for the alarming increase in a number of new diseases such as chronic fatigue syndrome, fibromyalgia, pediatric oncology, asthma, autism, physiological and behavioral problems in children. These harmful factors are also considered to be the main causes of the occurrence and development of cardiovascular disease, cancer, and diabetes [4].  
The EPA (US Environmental Protection Agency) in March 1990, qualified EMF as a Class B carcinogen (a possible carcinogen). In the same class, the EPA has positioned other well-known carcinogens such as formaldehyde, DDT, dioxins, and PCBs.  
The Swedish government, after official investigations which lasted 25 years and involved 500,000 people, found indisputable evidence of the harmful effects caused by the fields formed by power lines. Currently, in Sweden, these electromagnetic fields are positioned in the second class of carcinogens, along with cigarettes [4].  
To date, the pathological significance of the biological effects produced by exposure to the electromagnetic field generated by overhead electric lines (OHLs) is unknown. The problem of possible influences continues to concern the people, specialists in the field of sanitary protection, constructors of high and very high-voltage OHL, as well as the population in the vicinity of the power plants, lines or stations [5].  
We avoid presenting the medical results of some publications because the opinions between specialists are extremely divided--from the documentation that presents a minimal to non-existent risk on a person's health in the presence of these facilities, to others reporting the risk of developing different forms of cancer, in particular, an increased risk for children. However, certain values are known as the \"limit\" (defined in the next chapter), therefore, only by following some field measurements, can we say whether the measured values should raise a question mark or not.