How to have electricity in the bathroom
To safely use electrical appliances in the bathroom, you must follow certain rules.
The main conditions
The first requirement for electrical equipment intended for use in bathrooms, toilets, showers, saunas – hide the wiring (in this case, it is better to be protected from moisture). Strictly forbidden the cable through a metal pipe or to use wires with a metal sheath. Allowed only three phase wiring with double insulation. Three-phase system is needed in order to create a grounding of appliances working in humid areas. To do this, choose a wire with a smaller cross-section than the cross section of the phase conductor. Protective grounding is used to protect a person from electric shock if he touches the electrical voltage, for example, during the breakdown. To increase security, in addition to electrical appliances also grounded case metal bath (the shower tray).
There is a special zoning bathrooms and shower rooms depending on the level of electrical safety. In zone 0 (volume of the shower tray and bath) are permitted to install low-voltage electrical devices with 12 V degree of protection ІРХ7, wherein the power source must be located outside zone 0. Typically, such devices are built – in whirlpools or radios. Placement of outlets, switches, fixtures in zone 0 is prohibited.
Zone 1 covers the vertical space above zone 0 – 225 see Here you can set the devices with degree of protection environmental protection degree is IPX5, corded light switch, water leak sensor, the heater with double insulation or reinforced insulation. In zone 1 there should be sockets, switches, open wiring, fixtures, connection and branch boxes, washing machines. The food is made from laid in walls and floors cables or other wiring from zones and from the outside.
Lighters with cord switch, concealed wiring, devices with degree of protection ІРХ4 can be mounted in zone 2. It occupies a space width of 60 cm, adjacent to zone 1.
In zone 3 adjacent to zone 2 and covering a 240 cm wide, to allow appliances with protection ІРХ1 is watertight sockets, lighting, RCD, junction and branch box, outdoor and indoor power supply wiring, a shield, boiler, washing machine and other appliances.
It is vital
An important role in the whole electrical system in rooms with high humidity plays a lead-in distributor (VRU) and switchboards. Lying contains a counter, circuit breaker, RCCB, relays and some automation of the isolation control. The switchboard is rather more instrument oriented to the solution of problems of local nature.
This instrument is well suited not only for bathrooms, bathrooms, shower rooms and kitchens, but also for swimming pools, basements, wine cellars, garages, saunas, bath-houses, greenhouses, winter gardens. Note that switchboards and lie can be placed in rooms with high humidity only when the appropriate degree of protection (IP40).
Any device can function only if there are devices that provides automatic disconnection of power supplies – breakers and RCD. These mechanisms prevent the defeat of man by electric current. Breakers monitor a short circuit in the electrical circuit, ensure that wiring and electrical appliances.
- You should avoid the rubber insulation, as the material gradually cracking, causing leakage currents. To choose the cross-section of wires should be based on the planned load.
- You should pay special attention to the contacts and connections of the mains supply, as their failure can lead to malfunction and failure of electrical equipment and even fires.
- Widely used spring wire connection – plastic cap in cone spring is screwed on the twist, as on the thread. Produce such compounds ABB, Fenix Contact, Legrand, etc.
According to the magazine “Ideas for your home”.
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