Dear forum members,
According to the scope of work from my construction supervisor, the connection capacity for the house will be 14.5 kW.
Is that sufficient for a modern single-family home with 5 people?
I understand that most appliances are not necessarily running at the same time, but if I imagine that in winter many devices might be used simultaneously, and then a 2 kW hairdryer is added, the limit could be reached.
What would actually happen in that case?
Is it possible to upgrade the connection capacity, or are there restrictions imposed by the utility company?
How does a photovoltaic system affect this? Can it increase the maximum peak power demand of a house, or is it useless if the electrical installation itself is not designed for higher loads?
Thank you and best regards
Tolentino
According to the scope of work from my construction supervisor, the connection capacity for the house will be 14.5 kW.
Is that sufficient for a modern single-family home with 5 people?
I understand that most appliances are not necessarily running at the same time, but if I imagine that in winter many devices might be used simultaneously, and then a 2 kW hairdryer is added, the limit could be reached.
What would actually happen in that case?
Is it possible to upgrade the connection capacity, or are there restrictions imposed by the utility company?
How does a photovoltaic system affect this? Can it increase the maximum peak power demand of a house, or is it useless if the electrical installation itself is not designed for higher loads?
Thank you and best regards
Tolentino
The connection capacity provided by the utility company is usually calculated by the electrician in the meter application. Without the corresponding electrical loads, lower values will result. 15 kW (15 kW) should be more than sufficient. However, if the general contractor tries to cut costs on the electrical work, that’s a completely different matter...
So, I had an appointment today with the electrician on site. He advised us (me and the owner of the rear half).
The 14.5 kW is apparently just a purely calculated average value that is included just to have something written down.
The standard in Berlin is 50-63 A and about 40 kW.
No idea if that makes sense, I slept through the 7th grade (when we had electrical engineering) and dropped physics after 11th grade.
Anyway, he said I can be calm about it; I can connect whatever I want to the standard house connection as long as I don’t have commercial applications. It can handle pretty much everything.
The 14.5 kW is apparently just a purely calculated average value that is included just to have something written down.
The standard in Berlin is 50-63 A and about 40 kW.
No idea if that makes sense, I slept through the 7th grade (when we had electrical engineering) and dropped physics after 11th grade.
Anyway, he said I can be calm about it; I can connect whatever I want to the standard house connection as long as I don’t have commercial applications. It can handle pretty much everything.
K
knalltüte11 Jul 2020 07:50Hello,
I can only say that in NRW (Westnetz), above a "threshold" of 30 kW and up to 30 m trench length, each kW costs an additional €20.62 (net) . In connection with charging stations (only then do you basically get the normal connection as well as construction power for free), we only pay €424.77 net.
This offer is apparently valid only until 31.12.2020. And for each residential unit, a connection capacity of 10.8 kW is "specified" by Westnetz.
I can only say that in NRW (Westnetz), above a "threshold" of 30 kW and up to 30 m trench length, each kW costs an additional €20.62 (net) . In connection with charging stations (only then do you basically get the normal connection as well as construction power for free), we only pay €424.77 net.
This offer is apparently valid only until 31.12.2020. And for each residential unit, a connection capacity of 10.8 kW is "specified" by Westnetz.
N
NoggerLoger16 Jul 2020 22:06Wow, my future apartment already has 11 kW at the parking space. 22 kW for charging cars is almost overkill.
Since I need to arrange the network connections this weekend, a quick question to the group: Is 30 kW still sufficient when planning for electric mobility in 2020?
Even with a 22 kW wallbox, it can only draw the full 22 kW for a very short time before the load management reduces the power.
The cable is supposed to be 35 mm² (0.05 in²), and from a quick look at the charts, it should be able to carry significantly more amperes than the main fuse rated at 63 amperes. If I should ever need more than 30 kW later on, only the main fuse would need to be replaced, right, or did I misunderstand that?
Even with a 22 kW wallbox, it can only draw the full 22 kW for a very short time before the load management reduces the power.
The cable is supposed to be 35 mm² (0.05 in²), and from a quick look at the charts, it should be able to carry significantly more amperes than the main fuse rated at 63 amperes. If I should ever need more than 30 kW later on, only the main fuse would need to be replaced, right, or did I misunderstand that?
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