Wiring an inverter is not something you improvise: it links the panels (DC side), your switchboard (AC side) and the grid, in compliance with the standards and the Synergrid requirements. Poorly connected, it is dangerous and non-compliant. wendows carries out wiring to the highest standards and stays your single point of contact for warranty and after-sales service.
The wiring follows a precise logic, from the roof to the grid. Here are the key steps our teams carry out in Belgium, in compliance with the standards and the grid operator's requirements.
The panel strings are connected to the inverter in direct current, with suitable connectors and a DC isolator. Careful wiring determines yield and safety.
On the alternating current side, the inverter is connected to the switchboard via a dedicated breaker and the required protections. This is the interface with your home installation.
Earthing, residual-current devices and surge protection: these devices protect people and equipment. They are not optional.
The grid connection follows the Synergrid requirements and is subject to the required declarations to the grid operator. An administrative step we handle.
Beyond the cable, it is safety and compliance that make for successful wiring. The technical benchmarks to know, applied by our teams.
An inverter's wiring has two sides: the direct current (DC) coming from the panels and the alternating current (AC) going to the switchboard and the grid. Each has its own protections and rules.
The rating of the protections (breakers, isolators, cables) is sized to the inverter's power. Under-sizing is dangerous; over-sizing, pointless.
Earthing, residual-current protection and a possible surge arrester protect people and equipment. This is the core of compliant wiring, never an option.
The connection follows the Synergrid requirements and the declarations to the grid operator. wendows carries out the installation and handles the associated formalities.
The wiring includes connecting the monitoring (communication, possible production meter) so that tracking works from commissioning.
Once wired, the inverter is commissioned and tested: checking the protections, verifying the connection polarity and activation. Nothing is left to chance.
* Valeurs indicatives selon la gamme et la configuration. Les performances et garanties exactes dépendent du modèle, du vitrage et des dimensions — confirmées lors du métré.
A poorly wired inverter is a danger and is non-compliant. Our teams carry out the DC and AC connection, the protections and the earthing to standards, handle the Synergrid formalities, then provide warranty and after-sales service directly.
The connection varies depending on the type of inverter and whether a battery is present. Understand the architectures, then we frame the wiring together during the survey.
An overview of inverters: string, micro-inverter and hybrid. The type of inverter directly determines the wiring logic.
All about the inverter → special caseWith a micro-inverter, the conversion happens right at the panel: no high-voltage DC on the roof, a different wiring on the safety side.
All about the micro-inverter → with batteryA hybrid adds the battery connection to the wiring: extra cabling to integrate cleanly into the diagram.
All about the hybrid → brandThe SUN2000 hybrid and its ecosystem: a concrete example of inverter + battery + FusionSolar monitoring connection.
See the Huawei inverter → overviewBenchmarks on the complete photovoltaic installation, from panel to grid connection, to place the wiring within the overall project.
See solar panels → stringThe German string inverter: a classic central architecture, a useful reference for understanding standard wiring.
See SMA equipment →The inverter sits at the crossroads of three worlds: the panels (direct current, sometimes high-voltage), your switchboard (alternating current) and the distribution grid. Wiring it means linking these three sides while respecting precise safety and compliance rules. A mistake can be as dangerous as it is illegal.
On the DC side, the panel strings reach the inverter via an isolator and suitable connectors. On the AC side, the inverter joins the switchboard via a dedicated breaker and the required protections. Add to this the earthing, the residual-current devices and, in some cases, a surge arrester. These devices are never optional.
"A well-chosen but poorly wired inverter remains dangerous: the compliance of the connection is not a detail, it is the foundation.
The grid connection, finally, follows the Synergrid requirements and is subject to declarations to the grid operator. This is where our role matters: our qualified electricians carry out the wiring to standards, handle the formalities and commission the inverter after checking the protections and the connection polarity.
Three sides to link cleanly. Panels (DC), switchboard (AC) and grid: the wiring links these three sides with the required protections and in compliance with the Synergrid requirements.
The cost of the wiring is generally included in the overall installation rather than billed on its own, because it depends on the configuration (type of inverter, distance to the switchboard, presence of a battery). To get a sense of your complete project, start from our price page, then request a detailed, compliant quote.
The wiring is most often included in the overall installation, because it depends on the configuration. Here are starting benchmarks for connection carried out by our teams, subsidies and reduced VAT applied afterwards.
See solar panel prices →* Indicative benchmarks, the wiring being generally included in the complete installation. Precise, detailed estimate during your free quote.
It is neither recommended nor compliant: the wiring involves high-voltage direct current on the panel side and the grid connection, subject to the Synergrid requirements. It is the job of a qualified electrician, for the safety of people as much as for the compliance of the installation.
On the DC side, the panel strings reach the inverter via an isolator and suitable connectors. On the AC side, the inverter joins the switchboard via a dedicated breaker. Add to this the earthing and the residual-current devices. The whole is then connected to the grid according to the rules.
Synergrid issues the technical requirements for connecting a solar installation to the distribution grid in Belgium. The connection must comply with them and be subject to the required declarations to the grid operator. wendows carries out the installation and handles these formalities.
At a minimum: a DC isolator on the panel side, a dedicated breaker and a residual-current device on the AC side, as well as earthing. In some cases, a surge arrester is added. These devices protect people and equipment — they are never optional.
Yes. A hybrid inverter adds the battery connection to the diagram, with its own cabling and protections. It is one more reason to entrust the wiring to qualified electricians, who integrate the storage cleanly into the installation.
Yes, most of the time. The inverter's connection is included in the complete installation rather than billed on its own, because it depends on the configuration. The detail is stated on your quote, with subsidies and 6% VAT deducted afterwards.
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