Eric
When a generator (dynamo) is connected to the battery because the speed
is sufficient to close the cut out in the control box, or an alternator
is running at sufficient speed, this source of power is directly
connected to the battery and also to any load that is switched on.
Therefore one has a three way connection where, depending on whether the
load is greater or less than the generator or alternator output, current
will flow out or into the battery. Some owner fit an ammeter to watch
this. Part or all of the load can be taken from the generator or
alternator. In fact as somebody said recently it is possible to run a
car fitted with a generator with the battery disconnected so long as the
engine revs are kept high enough. Obviously once the revs drop there
will be insufficient power to keep the ignition alive and you will not
be able to restart without reconnecting the battery..
The reason for this long explanation is to let you know that your
statement that "All electrical consumers in a car are fed by the
battery" is not entirely true. However 'connected' to the battery is a
valid statement
What I was trying to say in my previous email is that a heavier cable
should be fitted to match the output of the alternator. This is because
an alternator is capable of charging the battery at a suitably high
current AND run all the lights and accessories.
Best regards
>
>John, I don't know what you mean. Maybe because English is not my native
>tongue.
>
>All electrical consumers in a car are fed by the battery. I've seen no
>consumer fed by the alternator directly. Of course the battery is fed by the
>alternator, so the alternator feeds all consumers indirectly via the
>battery. I'm not sure about modern cars, but I know for quite sure that this
>is the way the electrical charging system works in our AHs.
>
>As you say, if you replace the original cable between alternator and battery
>(after upgrading to a 50 amp alternator) with a 50 amp cable, everything is
>fine. Maybe this is what you said and I didn't get it right. At least this
>is what I wanted to say.
>
>Best regards
--
John Harper
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