On Monday, June 24, 2019 at 3:30:28 PM UTC-4, Commander Kinsey wrote:
On Sun, 23 Jun 2019 07:49:52 +0100, Xeno wrote:

On 23/6/19 7:55 am, Commander Kinsey wrote:
On Sat, 22 Jun 2019 18:02:30 +0100, Rod Speed
wrote:

snip

Wrong when there is normally more than the one
wire at the the positive terminal of the battery.

Even if there is an additional wire, explain to us how you
monitor the current in the charging cable with that wire.

With more than one wire, you can see
what the load from the lights etc is.

And you dont even have to do it that way
with modern computer controlled lights now.

I doubt it knows about everything, like how much power you're using from
the cigarette lighter socket etc. Easier to just measure the total load
in one go, than trying to add up precise currents it thinks the wipers
might be using etc.

It isn't concerned about *individual* loads. It looks at the *system
voltage* and operates from that.

Voltage gives you no information about the size of the load.

And the alternator/VR doesn't care about the size of the load, it's job
is to maintain a target SYSTEM VOLTAGE. That's why they call it a
VOLTAGE REGULATOR stupid.