Today, the bathroom was groundeda hot topic. Before grounding in the house has not been done because it did not arise a necessity. Over time, this issue has become acute, as in every bathroom there are many metal objects and electrical appliances. The source of increased danger, among other things, is itself a bath, so bath ground - is the key to your safety!
- What is the ground
- The urgency to protect
- Ground Rules for
- Grounding old style bath
- If the apartment is a cast-iron bathtub
- Grounding acrylic baths
- Grounding newfangled "Jacuzzi"
- Choice and installation of cables
What is the ground
Usually, modern electric appliancesa metal groove to commit ground. Grounding is a special protection that takes electricity when a power on the device, and then leads him to the ground. Everyone at least one slightly "bumped" for housing electrical equipment. It is often the case when working with a computer, washing machine or hot water supply, when the breakdown of the old tank PETN passes through the water current.
All this takes place, as you know, becauseOur electrical wiring in the apartment, and in particular the bathroom, designed without taking into account the respective safety measures. But when the ground current breakdown on the body are not felt. Also grounding is used for lightning protection purposes and to prevent the negative consequences in the event of a lightning strike.
The urgency to protect
Water - a great current conductor, so electricity and water form a very dangerous combination for a man. The bathrooms are for this reason known as the most dangerous places in the home.
Where there is too much installationproducts and metal pipes in combination with high humidity conditions to avoid accidents should be most strictly abide by the rules wiring.
Metal objects that do not haverelation to electricity (sinks, drains and water pipes, the pipes of the central hot water, radiators, baths) can lead to fatal consequences, if triggered fuse or other fuse. Thus, many are interested in and how to make ground in the bathroom and to prevent the appearance on the installation of metal components of hazardous voltage.
Previously, this problem is solved as follows: combined bathtub enclosure with plumbing or sewer standpipe. And today, to do so - a more expensive! If the neighbors below within their own apartment will change the water standpipe steel or cast iron sewer riser installation on plastic, it is - not the bathroom ground. This increase in the capacitor area with all the consequences arising from this.
Ground Rules for
In accordance with the wiring rulesnecessary that the bath was connected with a special connection to the ground bus, which is located at the upstream distribution box. Such a connection is called a ground jumper. And to carry out this procedure must in any bathroom, regardless of the electrical equipment, which is indoors.
Grounding old style bath
In many homes still installedSoviet baths. If old-style tub, its grounding must be done in the following way. Drill a hole in the leg of the bath and with the help of nuts, bolts and washers attach the grounding jumper.
Stranded wire is screwed to the legbath, and on the other hand - to a special distributor, to which are also connected, and all other wires of metal objects in a room - pipes, drains, priborov.Raspredelitel housings can be mounted on a bathroom wall in an arbitrary location. But in any case it is necessary to bring to a common grounding shield bus, which is located at the entrance.
If the apartment is a cast-iron bathtub
Modern metal baths are madewith special petal ground. And ground cast iron bath looks like. By lobe ground need to connect the "ground" wire, the exposed portion of the cable is clamped between the pre-washer with a nut and bolt.
If the bathroom is installedelectric shower with instant water heating or water heater, it must also have a sound grounding jumper, made in the form of joining metal components - housing with grounded pipes.
Grounding acrylic baths
The present trend of the 21st century - a bath of acrylic. These baths are light and not too expensive. They, like other products in need of grounding, despite the fact that acrylic is an insulator. Firstly, two kinds of acrylic is - cast and extruded. The latter material is bad keeps its shape, and bathtubs made from it, necessarily equipped with a metal frame that requires grounding.
Secondly, acrylic bathtubs ground wireto remove static electricity: if you type in a water bath of dielectric acrylic, it is still static element will be present. And if the acrylic bath area is not small, it is altogether able to accumulate a large electric charge.
Grounding newfangled "Jacuzzi"
The overwhelming success enjoyed today with bathelectrical filling - Jacuzzi. It works every whirlpool bath by electricity. It must be connected to the mains that has a voltage of 220 V ± 10% W and frequency of 50 Hertz.
For the bath requires a separate connectiongrounded sockets - special outlet for bathrooms with lockable plastic shutters for plugs and a third connector, which acts as a grounding. These sockets do not allow to fall into the splash of water and do not cause a short circuit, so they are called water proof.
Rosette made to install on a wall - byheight near 30 centimeters from the floor or 50 cm from the outer side of the jacuzzi in order to prevent water from entering. Eyeliner perform separate wire double insulated to the recommended 3-section 2.5 mm2.
To prevent damage to electrical equipment, caused by the sharp surges, You need to install the machine, designed for a load of 16 Amps, and the RCD, which has a value of 0.03 A. Differential mounting machine and perform the RCD is the bathroom.
Attention! It does not use the hot tub with a rosette, which has no ground contact. Also, you can not ground the bath by heating, sewerage and water supply equipment. It is strictly forbidden to carry out work related to maintenance, when included in the electrical network of the bathtub, and use the hot tub with a damaged electrical cord and ground fault.
Choice and installation of cables
Rules define the size of the wiringconductor that is to be used as a grounding jumper in different cases for the purpose of minimal cost of wiring work. The house is made to use a hard stranded cable, which has a cross-section of 6 mm square, in the green with a yellow PVC insulation. This cross-section is large enough to provide electrical bath. If using such a wire is connected to the heated bath of running water, the connection should be done through automatic overcurrent protection.
In most cases, the position of the savings for groundingsteel electrodes are selected, although allowed to use steel copper shell or even copper. The length of the grounding cable should be at least 2 meters. However, you should remember that the shorter the cable, the less likely his breakthrough. So you should think carefully about the time of posting the output approach to electrical equipment. Besides grounding should not have a coating which degrades electrical contact.
For aesthetic reasons, to layrecommended jumper for panel bath screen, in the cupboard under the sink or floor boards. You can also put the wire under plaster or in wall voids as a normal electrical wiring.
Concerning the need for groundthe bathroom there are different opinions, but if you think about their health and safety of care, better not to neglect this aspect. To avoid electric shock, which is caused by contact with the bath, it should be grounded. Indeed, in the case of force majeure only grounding preserve human life.