Hello,
since our street is currently being renovated and we plan to start building in the next six months, we need to determine which electrical connection we should have installed, as we have to specify this now.
Unfortunately, we do not yet have final details from our builder, but experienced home builders or professionals will surely know what is appropriate.
We are planning a single-family house with 2 floors plus a basement (total living area 270 sqm (2906 sq ft)), continuous underfloor heating, an air-to-water heat pump, and a Wallbox for charging electric vehicles (3-phase).
Can the correct connection size be determined based on this information? We have assumed a 25 kW capacity with 3x 63 A.
Thank you for your feedback!
since our street is currently being renovated and we plan to start building in the next six months, we need to determine which electrical connection we should have installed, as we have to specify this now.
Unfortunately, we do not yet have final details from our builder, but experienced home builders or professionals will surely know what is appropriate.
We are planning a single-family house with 2 floors plus a basement (total living area 270 sqm (2906 sq ft)), continuous underfloor heating, an air-to-water heat pump, and a Wallbox for charging electric vehicles (3-phase).
Can the correct connection size be determined based on this information? We have assumed a 25 kW capacity with 3x 63 A.
Thank you for your feedback!
C
Caspar202030 May 2017 12:50In theory, we can have up to 3*100A for the
However, there are sometimes limitations on how much is actually possible at short notice. It might be necessary to upgrade the upstream infrastructure. Most people here have 3x63A.
By the way, for a small fee, we can offer
Net connection )*1.2 up to 100A / 10m on private property 1,190.00 €
However, there are sometimes limitations on how much is actually possible at short notice. It might be necessary to upgrade the upstream infrastructure. Most people here have 3x63A.
By the way, for a small fee, we can offer
Surcharge for protection up to 160A 214.20 €
F
frank_gayer30 May 2017 12:59Did I mention that I want to install a Tesla charger? Thanks for your information. In our case, even 3x 80 amps would be possible.
K
Knallkörper30 May 2017 13:05andimann schrieb:
The standard at our local utility (and likely at most others) is a 3 x 50 ampere breaker for the house connection. The upstream infrastructure usually doesn't allow for more. At least that was the case for us.
That’s roughly around 20 kWHello andimann,
are you sure? I mean, with a 50A breaker, which is rather unusual, you get just under 37 kW.
@OP:
I would check up to which capacity you won’t have to pay extra. If that’s at least 63A, it will probably be enough.
Hello,
if that’s the case:
I would go for that if it doesn’t cost an insane extra fee. For us, it was simply limited to 3x 50 A and they insisted that this was the standard everywhere. Looks like they misled me.
But even with a 32 A connection, you can fully charge a Tesla’s large battery overnight. What charging power does a Tesla usually operate at?
By the way, I just realized I made a mistake converting 3xX Amps to kW. I forgot the square root of 3:
The 3x 50 A give a max of 35 kW, the 3x 63 A give a max of 44 kW.
In both cases, you can easily supply the charger with 20 kW and still have power in the house.
So, if 3x 63 or 3x 80 A is available for a low cost:
Go for it!
Beyond that, it’s probably overkill.
Best regards,
Andreas
if that’s the case:
frank_gayer schrieb:
At our place, even 3x 80 Amps would be possible
I would go for that if it doesn’t cost an insane extra fee. For us, it was simply limited to 3x 50 A and they insisted that this was the standard everywhere. Looks like they misled me.
But even with a 32 A connection, you can fully charge a Tesla’s large battery overnight. What charging power does a Tesla usually operate at?
By the way, I just realized I made a mistake converting 3xX Amps to kW. I forgot the square root of 3:
The 3x 50 A give a max of 35 kW, the 3x 63 A give a max of 44 kW.
In both cases, you can easily supply the charger with 20 kW and still have power in the house.
So, if 3x 63 or 3x 80 A is available for a low cost:
Go for it!
Beyond that, it’s probably overkill.
Best regards,
Andreas
Hi,
No, you're right, I was a fool and forgot the factor.
I'm not sure if I actually installed 50 A, but that's what the order to the utility company says. This still seems to be the common fuse rating for the service connections around here.
Best regards,
Andreas
Knallkörper schrieb:
I mean, with a 50A fuse, which is rather unusual, you have just under 37 kW.
No, you're right, I was a fool and forgot the factor.
I'm not sure if I actually installed 50 A, but that's what the order to the utility company says. This still seems to be the common fuse rating for the service connections around here.
Best regards,
Andreas
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