There are many appliances in every home that become completely useless without electricity. In order for all devices on electricity to function properly, an installation with an electrical switchboard is necessary.
What is an electrical switchboard?
An electrical switchboard is also known as a building switchboard. It is a box that is used to control the entire electrical system located in the home. The switchboard must be safe and functional – sized to meet the needs of the occupants.
Electrical switchboards differ in their functions. When choosing a switchboard, it is important to take into account the future needs of the residents – with the development of technology the number of devices for electricity is increasing.
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Types of electrical switchboards
Electrical switchgear can be divided due to:
voltage height:
low voltage (nn) – up to 1 kV;
medium voltage (sn) – from 1 kV to 100 kV
high voltage (Wn) – from 100 kV to 220 kV
highest voltage (Nn) – from 220 kV upwards;
mounting method,
surface mounted,
flush mounted,
hermetic – designed for rooms with increased humidity.
construction:
panel – have the smallest dimensions, are commonly used in homes and commercial premises;
box – they are usually installed in industrial facilities, they work with the intensity of a few hundred amperes;
cabinet – installed in large industrial facilities, working at a current of several thousand amperes.
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Application of electrical switchgear
The most important task of the electrical switchgear is to constantly control the individual wires and quickly turn them off in case of any failure.
Switchgear can also be divided according to the place of application:
residential,
industrial,
power supply and distribution,
building,
pole-mounted.
Switchgear division according to functions performed:
shunting and contacting,
branch,
main.
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What should one consider when choosing a switchgear?
When choosing the switchgear, one should be guided by
safety – the switchgear should meet the PN-EN 60439-3 standard;
comfort of use,
functionality,
quality of construction and applied apparatus,
resistance to external factors – in case of outdoor switchgears;
possibility of expansion and modernization;
overall dimensions,
manufacturer’s technical support;
price.
The switchgear should always be matched to:
the parameters of the network or installation,
conditions in which it will be installed – e.g. one cannot install outdoors a switchgear which has no protection against rain or frost;
the investor’s expectations.
For example – low-voltage switchgear standards
Low-voltage switchgear, to be approved for use, must meet the standards:
PN-EN 60439-1:2003,
PN-EN 61439-1:2011,
PN-EN 61439-2:2011.
The above provisions define:
switchgear operating conditions,
constructional requirements,
technical features,
scope and type of tests concerning low-voltage switchgear.
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Choosing the right windows is quite a challenge. On the market you can find many models made of different materials
In connection with this in recent years more and more popular began to enjoy the wooden windows, but this does not mean, however, that those made of PVC went completely away. They still have many advantages which speak for their purchase and installation. What are they? Here we discuss them
Why are PVC windows the most popular choice?
The popularity and ubiquity of PVC windows results first of all from their relatively low price - in comparison with other materials. At the same time they still provide very good parameters, for example those related to thermal insulation or soundproofing. In addition they look good regardless of the architectural style in which the building was constructed and are available in many colors to choose from to make it easier to match them in terms of style to the facade of the building or its surroundings. That's why they still haven't fallen out of the market in spite of high competition from wooden windows.
4 main advantages of PVC windows
The above mentioned advantages of PVC windows are not the only ones. Apart from that you can also enumerate their four most important features, which speak for the purchase of just such models
High resistance
PVC windows are extremely resistant to various atmospheric factors. They are not destroyed under the influence of high and low temperatures or intense sunlight falling directly on their surface. Additionally, thanks to the fact that the material from which they are made does not absorb moisture, they are also resistant to mould and mildew and prevent the development of insects
Long lasting durability
Another advantage of PVC windows is their durability, which can be up to 50 years, thanks to which replacing windows with just such models can solve the problem associated with this element of the building structure for the entire generation of the family
Excellent tightness
In addition, PVC windows are also characterized by excellent acoustic insulation, or the ability to suppress sounds from outside the building. Therefore, they are recommended for installation in particular where there are busy traffic routes behind the window, playgrounds or other places generating high levels of noise. This parameter is also not without influence on the thermal insulation of PVC windows, which affects the reduced inflow of air from outside. This feature is extremely important especially during the heating period, because it has a positive effect on heating bills
Easy care
The last of the key advantages of PVC windows is the fact that in order for them to present themselves impeccably, apart from occasional cleaning of frames, they do not require almost any care, in comparison with wooden models, which should be painted protectively. Moreover, their cleaning itself does not require the purchase of specialized agents either. All you need is warm water with dishwashing liquid, a soft cloth and glass cleaner to restore their original splendour and cleanliness
How to take care of PVC windows?
In spite of the fact that after being installed in buildings PVC windows require almost no user's interference in their construction in order to fulfil their task efficiently, sometimes there are situations in which they need some attention. Such an eventuality may be a slight lowering of the window frame in the first year of its use. However, then it is enough to adjust them with a wrench to be able to enjoy their full functionality again
To sum up, PVC windows are one of the best choices in case of buildings located in noisy neighbourhoods as they provide excellent acoustic insulation. Moreover, they don't require any complicated maintenance or upkeep and are guaranteed to last up to 50 years. All this combined with a low price makes them worth taking an interest in, choosing window fittings not only for houses but also for public buildings
