How are solar modules installed
Install solar system: step by step
Every year mail flutters into the house from the electricity provider who announces that it will once again raise prices. Sure, changing is relatively easy, but since the electricity market was liberalized, there has been a veritable jungle of providers out there.
Your own photovoltaic (PV) system on the roof or open space is a very powerful sword on the other hand, because depending on its size, it is able to make a household self-sufficient in electricity. But on the technical side, this is a major project. We are therefore now showing the steps that are necessary if you want to install a solar system.
A partner muss here
A PV system can theoretically and practically be installed anywhere. As a rule, however, it will end up on the roof of the house or an outbuilding for reasons of space. That brings us to a problem: As far as installation is concerned, here three different job profiles cut in:
- The carpenter, because the roof structure is directly affected
- The roofer, because the roofing plays a role
- The electrician because everything needs to be connected
This means that as soon as you are not really technically skilled in any of these professions, you should to get helpbefore you commit a mistake that can cost thousands of euros.
A solar specialist company is also important because it gives the necessary assistance to consider how much power is possible.
What does the Statiker?
Who builds from scratch and one from the beginning PV system would like to integrate does not have this problem. But with all existing buildings it is necessary to involve a structural engineer. It is true that every roof removed in Germany comes with a Load reserve which is based on the roof pitch angle and the regionally expected snow load. However, depending on the size of the system, the weight of the PV modules can reduce the remaining reserve too much, because you have to reckon with an additional 25 kilos per square meter.
At this point in time, the PV company has the documents with the technical key data at hand. On the basis of this, the structural engineer can now determine whether the project can start like this.
And very important: the structural engineer will also tell you whether the system is in this form building permit-free is. In the vast majority of cases it is, but better safe than sorry.
Netzbcontact the operator
In a power grid, it must be crystal clear at all times how much is fed in and consumed. A PV system is usually connected to the public grid in order to feed in excess electricity - after all, there is compensation for this Feed-in tariff. The network operator just has to know what is in store for him.
This means that you can now contact your own with the performance data that the PV specialist calculated for your own system in the first step Network operator and can be told by him whether the system can also be installed from his side and whether changes in the house installation are necessary.
This step usually includes that one smart electricity meter is installed. This is mandatory for all systems above 7kW / p and ensures that the network operator knows exactly how much is being fed in at what time. You can find an overview of the best electricity meters here:
Sectionremove the attic
It is in the interest of every homeowner that their PV system generates as much electricity as possible so that it quickly recovers its costs. But every little shadow between the modules and the sun reduces the output to a certain extent. Hence it is now necessary to have such Eliminate shadowing. What lies beyond your own property is of course inviolable in a certain way.
But you have your own Treesthat cast their shadows, they have to be trimmed or felled entirely. A job that demands the entire handyman, but which you can absolutely manage if you stick to the rules.
Now things can really start. The first step is to get the Substructure to install. This consists of metal angles that are pushed from below between two tiles of the roofing and screwed to the counter battens. To do this, it is therefore necessary to locally remove the roofing.
Are these hook attached, the actual Profiles installed, which ultimately carry the PV modules. This is exactly what happens in the next step: the modules are fixed to their frames and the work is done.
tip: If you want to do this job yourself, you should definitely get one Inclined elevator rent. There is something gigantic about letting individual modules reach out through the skylight or other openings Risk of damage and accident for people and technology.
In the end, this step is very easy to read: Once the individual modules have been installed, they are either in series or in parallel with one another, depending on the type of installation wired and then with the Inverter connected, which in turn is then connected to the home network.
tip: Since this is an extremely safety-relevant task, it is urgently recommended to consult an electrician at least for advice.
From the moment you put the plug in the inverter, the PV system produces electricity and will feed it in if you don't use it yourself.
But: Nobody knows officially about the system yet, which means that no feed-in tariff can be made. Therefore: Your own system should be registered with the Federal Network Agency as soon as possible. This can be done in a matter of minutes via the network.
In line with this topic: Save money with solar thermal and photovoltaics!
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