To the class of increased danger in our homes (about 100%) include: Bathrooms, showers, bathrooms, kitchens, pools, saunas, baths, greenhouses, winter gardens.
Premises with increased danger to protect people from Electric shocks are provided. designs: sockets, plugs have grounding contacts, dangerous voltage is reduced to safe with a transformer 12V or 24V, use residual current devices (RCD) or differential. automatic machines.
ouzo to protect a person from electric shock
The main cause of electric shock is loose or damaged wire insulation due to accidental mechanical damage or moisture. Insulation failure causes current leakage and leads to voltage metal parts of electrical appliances, fixtures, pipelines, which leads to potential danger.
it’s dangerous for a person not high voltage, but power current passing through it
You should know that for a person it is dangerous not high voltage, but the strength of the current passing through it. Usually in the bathroom we stand barefoot on a damp floor, which conducts excellent current, reduces resistance of the body and significantly increases the current strength. So Thus, shock in rooms with high humidity can turn out to be significantly stronger than in any other room. Force a current of 50 mA can be fatal. Therefore, to protect a person from electric shock is installed RCD 30 mA.
500 mA current flowing through the old, worn insulation and passing on the surfaces of combustible materials can provoke inflammation.
old, worn insulation can cause a fire
Therefore, when operating electrical equipment, we can face not only the risk of electric shock, but also the possibility of fire occurrence. To protect the premises from fire at the input switchboard set fire protection RCD on 100 mA, 300 mA or 500 mA. To organize safe work wiring accessories and electrical appliances, classes are provided and degree of protection. So, for particularly damp rooms, a protection class from electric shock must be at least class II,
electrical protection classes
and the degree of protection against water – at least IP-44, where the first the number indicates the degree of protection against solid particles, and the second – the degree of protection against water. Parameters are indicated by international standard International Protection (IP).