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John Rumm John Rumm is offline
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Default OT Organic flow batteries

On 13/08/2016 06:31, harry wrote:
On Friday, 12 August 2016 13:24:24 UTC+1, John Rumm wrote:
On 12/08/2016 12:06, NY wrote:

When people recharge electric cars at home, how do they get the mains
power to the car?


Usually by installing a charging point on their drive.

Trailing extension cable from a socket in the garage
etc, or some sort of permanent charging point that has to be installed,
maybe by digging up drive to lay cables from nearest ring main.


yup.

What
sort of power (ie what is current rating of cable) is typical?


32A

(most cars can also charge from a 13A lead as well)


Drivel.


Is a fair description of your comments it has to be said. However, what
I have said is factually correct. Please highlight where if you think
you have found an error.

Virtually nobody needs fast charging at home.


This is of course nonsense - I am sure many would actually find it very
useful if it were an option.

However we are not discussing fast charging since 32A is hardly "fast"
anyway - its just a bit less slow than the *very* slow 13A charger.

Cars are charged from a 13a socket overnight on cheap electricity.


Indeed - and way to slow for many users given the pitiful range of most
electric cars. You are talking about 8 - 10 hours for many EVs for a
full charge at 13A/240V (i.e. ~3.2kW). The faster home chargers normally
go to about 6.6kW, and can reduce that to a little over half the time.

Many electric car owners have solar panels.


Do they power their tin foil hats?

Since that does not alter the charging time, or the type of charger
installed, its of no relevance.

Plus nobody runs the battery to depletion.
Most don't run it anywhere near depletion.


These would appear to be unsubstantiated and implausible assertions.

(You have to appreciate that just because you do something, it does not
mean everyone else does)

Fast charging points are used at destinations and en-route.


If available, and working, and not in use / blocked. [1]

Also many electric car owners have another car.


They put that in the boot do they?


[1] Its interesting to see that the "bait and switch" has now started
with the public charging points. Many people were attracted to these
because they could be used free of charge or for very low cost. Now that
there has been a surge in EV sales, many are now paid for. In these
parts, they are rented out at about £6 for a charging session (typically
20 - 30 mins). Many EV users finding they need to buy two sessions to
get an 80% charge, so £12 a pop!

--
Cheers,

John.

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