ᐅ Is a connected load of 14.5 kW sufficient for the house?

Created on: 23 Jun 2020 11:36
T
Tolentino
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
B
Bookstar
23 Jun 2020 22:55
22 kW car charging, plus an 8 kW heat pump in winter, and then the usual appliances like refrigerators, hair dryers, TVs, PCs, and other energy consumers. So I definitely wouldn’t want to go below 40 kW.
Tolentino23 Jun 2020 23:02
Ok, I need more.
How much extra should a larger-sized SLS cost?
B
Bautitus
25 Jun 2020 21:54
In our street, everyone was offered 30kW as the standard supply by the utility company. This was provided without any additional charge. We then applied for 40kW because of an electric car, and it now costs about 1,000 more.
Knöpfchen26 Jun 2020 09:29
In general, consumers must register with the utility provider starting from 6.9 kW.
This naturally also includes a charging station.
Charging stations with 22 kW usually require approval,
so you will need authorization or permission from the utility provider for these.
As mentioned before, the complete wiring, including meter wiring for 50 A or higher, is not sufficient with the usual 10 mm² (8 AWG) cables.
N
NatureSys
26 Jun 2020 20:18
Is it necessary to register the sauna heater with the utility provider?
Knöpfchen26 Jun 2020 21:17
Generally, this applies at higher power levels.
Exact details about the required power level can be found in the tab provided by your utility company, which is publicly accessible on the internet.
Your electrical contractor, who also connected the system, will handle the registration. They should definitely initiate this process.
It is basically just a formality to inform the utility company about the potential loads on their supply network.
There is no additional cost for this.