Hello
I want to have a wallbox preparation installed for our new build house, for future electric cars.
We will have a garage and a parking space in front of the garage.
I was thinking of having the wallbox preparation installed inside the garage.
What needs to be done for the preparation, and what kind of electrical cable will be needed later to easily retrofit a wallbox?
I want to have a wallbox preparation installed for our new build house, for future electric cars.
We will have a garage and a parking space in front of the garage.
I was thinking of having the wallbox preparation installed inside the garage.
What needs to be done for the preparation, and what kind of electrical cable will be needed later to easily retrofit a wallbox?
I’ll join the discussion as well. We are currently planning our prefab house. The architect is submitting the building permit application without the garage for now. Here in NRW, we can still build a garage up to 30m² (320 square feet) later without a permit, as long as it fits within the development framework and site plan. Our utility room is located at the front left of the house, and the garage will be built on the right side of the house (if it is added later). It will probably be a prefab garage.
The kitchen will also be on the right side of the house. Is it possible to simply run a high-voltage cable from the kitchen to the garage? Who should I hire and at what stage for that? We are having a turnkey build, so as the client I have no direct contact with the (sub)contractors. And how do we even get electricity (for the garage door and lighting) into the garage? The prefab garage suppliers make it easy by saying they don’t connect the electrical installation; that is the responsibility of the homeowner. But once the garage is in place, it will be too late to get power there somehow.
The kitchen will also be on the right side of the house. Is it possible to simply run a high-voltage cable from the kitchen to the garage? Who should I hire and at what stage for that? We are having a turnkey build, so as the client I have no direct contact with the (sub)contractors. And how do we even get electricity (for the garage door and lighting) into the garage? The prefab garage suppliers make it easy by saying they don’t connect the electrical installation; that is the responsibility of the homeowner. But once the garage is in place, it will be too late to get power there somehow.
Just because you’re building a turnkey house doesn’t mean you won’t have any contact with the subcontractors. Or do you mean you’re building with a developer?
Who is doing the rest of your electrical planning? Switches, light fixtures, etc.? That’s exactly where you should be able to specify which connections or cables you need on the outside of the house and where.
You can’t just run a heavy-duty power cable from the kitchen to the garage. A wallbox requires a separately protected circuit; it can’t be connected to the same circuit as the cooktop…
Who is doing the rest of your electrical planning? Switches, light fixtures, etc.? That’s exactly where you should be able to specify which connections or cables you need on the outside of the house and where.
You can’t just run a heavy-duty power cable from the kitchen to the garage. A wallbox requires a separately protected circuit; it can’t be connected to the same circuit as the cooktop…
opalau schrieb:
Just because you are building a turnkey house doesn’t mean you won’t have contact with the subcontractors. Or do you mean you are building with a developer?
Who is handling your electrical planning? Switches, light fixtures, etc.? This is exactly where you should be able to specify which connections/cables you need on the exterior of the house and where.
You can’t just run a high-voltage cable from the kitchen to the garage. A wallbox (electric vehicle charger) requires a separately protected circuit; it can’t be connected to the cooktop circuit…Okay, thanks for your reply. No, we are not building through a developer, but normally with a prefab house company. Yes, we still have the electrical planning to do, so it’s definitely an option to bring it up there. I originally thought that in this phase you only decide where sockets and light switches will go, etc.
MarkoW. schrieb:
Okay, thanks for your reply. No, we are not building through a developer, but directly with a prefab house company. Yes, we still have the electrical plan; that would of course be an idea to discuss it there. I actually thought you only decide where sockets and light switches are placed, etc. To put it very simply, during electrical planning you discuss where which cables will be laid. It’s certainly not just about sockets and light switches. Ceiling and wall outlets, network connections, indoor and outdoor doorbell stations, terrace and garden lighting, and so on. And this is exactly where you can mention that you need the necessary cables at the location of the future garage. Ideally, not just one (properly dimensioned) power cable, but also a network cable to enable control of the wallbox.
As I mentioned earlier: depending on the chosen wall box, an additional data cable (RS485) might also be useful. Otherwise, I would definitely make sure that the cable used is thick enough. For an estimated cable length of more than 10 m (33 feet) from the main distribution board to the box/garage, I would probably go straight to 10 mm² (7 AWG). That way, you are on the safe side if it turns out to be a 22 kW box. (However, this one is not eligible for subsidies.)
Hello Marko,
you can arrange all of this with your prefab house company (which one?) during the final selection process.
Together, you will go through each socket, cable, water connection, etc., step by step and decide, for example, that a cable (preferably 6–10 mm² (0.01–0.015 in²)) should be installed or routed on the exterior right side of the house. They will probably run it through an empty conduit out of the house. You can also have a LAN cable (outdoor-rated cable) installed there directly.
The electrician who later connects the wallbox will then connect the cable to the circuit breaker panel and so on...
you can arrange all of this with your prefab house company (which one?) during the final selection process.
Together, you will go through each socket, cable, water connection, etc., step by step and decide, for example, that a cable (preferably 6–10 mm² (0.01–0.015 in²)) should be installed or routed on the exterior right side of the house. They will probably run it through an empty conduit out of the house. You can also have a LAN cable (outdoor-rated cable) installed there directly.
The electrician who later connects the wallbox will then connect the cable to the circuit breaker panel and so on...
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