How it is safe to make a bathroom convenient?
Once the bathroom in the city apartment was perceived by fellow citizens as alternative to public baths: a thing, in principle, good, but it is quite possible and to do without it.
Today use city baths less often, and the bathroom from a little demanded alternative turned into important part of the dwelling. In a bathroom we make daily routine hygienic procedures, carrying out a considerable part of the life in the close room.
Unfortunately, developers of projects of houses of mass building often treat a bathroom in the old manner. The area of an average bathroom it is rare when allows to place conveniently in the room the required furniture and household appliances, and from electric equipment the only “Ilyich`s bulb“ which is poorly lighting the undersized room without windows is most often available to happy new settlers.
Therefore at all not a rarity when life in the new apartment begins with cardinal reorganization of a bathroom, saturation its hi-tech “benefits of a civilization“ using the electric power. Alas, whether on ignorance, whether for other reasons, but the safety measures at such reorganizations are observed not always.
The state standard defining requirements of electrical safety - not just the document which is thought up by officials from inaction, and the set of rules, the electric devices developed on the basis of long-term operating experience.
The Russian standard divides any bathing or shower placement into four zones for safety and the choice of electric equipment . Directly the bathtub or the pallet of a shower cabin belongs to zone 0 . In it use only of low-voltage devices up to 12B is allowed.
The zone 1 is a space under a bathroom and over it up to the height of two and a quarter meters from floor level. Here not the place to additional lighting, fans or other electric devices, except for water heaters.
The space around the first zone from above to a ceiling and on the parties in a radius of 60 centimeters from a bathroom or the shower pallet belongs to zone 2 . Here, except water heaters, installation of lamps of the second class of protection against defeat by a current with the double or strengthened isolation and without grounding is allowed.
In all listed zones it is impossible to install any distributing devices, boxes and control panels. If in a bathroom the socket is necessary, then it can be established in zone 3 covering space from a ceiling to a floor in a radius of 2,4 meters around a zone 2. But simple turning on of sockets in the room power supply network is inadmissible, the standard demands to use dividing transformers or devices of protective shutdown.
Internet users are well familiar with the concept IP addresses. It appears, the abbreviation of IP is used also for reduction of the words “Ingress Protection“, system of the standards of the International electrotechnical commission defining requirements of protection of electrical household appliances against water influence.
The Russian rules of the device of electroinstallations define that the electric devices installed in a zone 0 have to provide water tightness at immersion in water that corresponds to a class of protection IPx7.
The IPx5 devices protected from influence of water streams of any direction are allowed to be installed in a zone 1. In a zone of 2 bathrooms of premises not of general use it is possible to use electric devices of the class IPx4 to which at all hit of splashes. The IPx1 devices protected from influence of vertically falling drops establish in a zone 3.
Starting works, you remember that electric safety cannot be neglected at all even if it seems convenient.