On Tue, 17 Jul 2018 12:25:25 +0100, John Williamson
wrote:

On 17/07/2018 11:50, The Other Mike wrote:
On Mon, 16 Jul 2018 08:59:01 +0000 (UTC), wrote:

It seems to me the whole charging problem of mass ownership of electric cars
has been kicked into the long grass. As usual politicians will only react when
they have to when the load on the grid either local or national becomes critical
whereupon headless chicken mode will be engaged.

Maybe you'll throw in the argument about cables draped across pavements but a
couple of hours of work on the legislation would see that dangerous and
unsociable practive outlawed overnight.

So outlawing electric cars for something approaching 50% of the
population who can only afford a flat or terraced house.

The 'poor' without places to park offroad will have to do without personal
transport charged at home somewhere around 2050-2060 They better get planning
now because there are only 22 years to change habits if they are to buy a new
hydrocarbon fuelled car. Maybe they could start saving now to buy a bigger
property or in the intervening period public transport could fill the gap and
get the vast majority of cars off the road regardless of their fuelling.

Oh, boy. "Start saving now to buy a bigger property". I'd love to, would
you like to persuade my boss to double my wages in real terms?

As for public transport picking up the load, I live in the best place I
can afford, and while until the firm moved recently it took ten minutes
to drive to work, doing the same trip by public transport took at least
40 minutes with two longish walks and an average ten minute waitfor a
bus halfway, or a short walk, and a direct bus that takes 58 minutes.
Now they've moved, it still takes ten minutes to drive, but well over an
hour to get there by public transport. Now consider, I often work a 14
hour day, and consider I need at least 8 hours at home every night for
sleep and personal hygiene...

See this for a worked example on electricity usage for the 'average UK motorist'

Link? All I see is a message ID.

Yes it's message id, to another posting here

It's usable by most newsreader for decades, failing that

==
So with a 35 mile round trip, maybe averaging 35mph, that's one hour per day, or
five hours usage a week, add on another hours usage for bit for shopping etc and
a day off on sunday and that leaves some 162 hours a week for a charge to take
place. 210 miles in a week is just under 11000 miles a year which is high by
average private motorist standards (see below)

At 18kWh/100 miles for a Nissan Leaf (BMW i3 is similar as is the claimed
performance for the Tesla Model 3) then it needs some 1980kWh per annum of
charge.

If 100% of that charge takes place at home then it can take place spread across
100 hours a week (12 hours a day weekdays + 24 hours sunday + 16 hours on a
saturday)

It needs 38 kWh per week to do those 210 miles

Ignoring charging losses that equates to an average mains supply load when on
charge of around 380W, or 1.6A at 240v

As it is the average UK private mileage is (was) 7900 miles in 2013, down from
9200 miles in 2002

https://www.bbc.co.uk/news/uk-england-28546589

So for the 'average private motorist' the average mains supply load when on
charge, for charging purely at home, drops to around 270W or 1.125A at 240v
==
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