Life of modern man is unthinkable without various electric and electronic devices. We watch TV, work on the computer at night, turn on the light, talking on a cell phone or normal, use a microwave.
This list can be continued. No one denies the usefulness of these devices, but few people think to e question of whether instead they bring some harm.
As there is electromagnetic radiation, and why should he be afraid of
Any AC regardless of the frequency creates an electromagnetic field that affects the environment, including humans. By its nature, the impact of electromagnetic waves similar to low-level ionizing radiation.
Man responds individually to the effects of even low intensity with long duration, the figure 1. Sometimes it is limited to fatigue and headaches. In severe cases, possible infertility in women and cancer.
Modern domestic electrical and electronic equipment is designed to meet sanitary standards. However, to guarantee the achievement of the required level of protection against electromagnetic interference it is advisable to take a number of additional measures.
Operation maintained equipment
The intensity of any electromagnetic radiation source grounded in a completely closed housing (Faraday cage) significantly weakens that Figure 2 shows. The desired effect is achieved if the casing is completely closed, and the grounding resistance meets the applicable standards.
These conditions are met only serviceable certified equipment. Particularly rigidly they should be observed for microwave ovens, the main element of which is a powerful generator of microwave radiation.
Minimizing the time the use of electronic devices
Most home electronic devices have low power, but uses high-frequency signals, which are characterized by increased absorption in the living tissue. In addition, the risk is amplified by the fact that they are often located close to the brain (cell phone, computer display screen) that shows the figure 3.
Given this characteristic, the primary means of compliance "electromagnetic sanitation" becomes the limit operation time with consumer electronics to the level required.
Use of 3-wire wiring
Power wiring, a 3-wire cable has a more effective protection against electric shock.
An additional positive effect on its setting is to reduce the level of the electromagnetic field in the vicinity of the working cable. Effect that is connected with the mass conductor grounding member serves as the drain and "pulls" the field followed by a branch to the ground, reducing its strength in the medium.
conclusion
Because of the nature of occurrence of electromagnetic fields and their propagation characteristics general recommendations to ensure the normal electromagnetic environment in a building can be reduced to the following simple rules:
- It should be used exclusively certified electronic and electrical equipment with the corresponding sanitary certificates.
- anyone should be serviceable used equipment and can only be activated when fully assembled body.
- as part of the home wiring to be used exclusively 3-core cable and socket with a ground contact. The grounding wire power cable is required to be connected to the ground bus on the opening panel.