Is the house connection capacity of 14.5 kW sufficient?

  • Erstellt am 2020-06-23 11:36:19

guckuck2

2020-08-28 08:29:48
  • #1
30kW is perfectly fine. You have to be able to use the 22kW wallbox first (and get it approved, by the way). In my opinion, only the Zoe can charge 22kW AC. All others, including Tesla, Audi e-tron, Porsche Taycan (so the expensive, most advanced technology ones) etc., can only do 11 kW AC anyway and I don’t know of any model announced for 2021 that could charge AC faster. It is simply fast enough to fully charge even a 90 kWh battery overnight without problems. The "people’s" BEV ID.3 has 58 kWh, which is fully charged in 5 hours. Progress is being made with DC fast charging, as the stopover should be as short as possible. In the AC area (destination charging), 11 kW, as described, is already quite adequate. Cables are deliberately oversized because the losses are lower this way. If it really matters, quite a bit more current can go through. 3x63A protection is also very respectable. If more is needed later, only the fuses and possibly the meter need to be replaced.
 

FoxMulder24

2020-08-28 09:42:32
  • #2
Because of the same topic, I asked our network provider.

The response was:
At our company, the house connection is created with 100A, 66kVA.

I think that is more than enough for a later charging point (or 2 ).
 

miho

2020-08-28 11:58:30
  • #3

22kW can charge cars over fairly long periods, if their charger even supports that much AC. As already mentioned, many cars can only do 11kW AC or less.
The often described throttling by the charging management concerns the much faster DC charging. For example, it quickly drops from a peak of 170kW to below 100kW. A Tesla M3 only goes below 22kW at over 90% state of charge.
 

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