Coach Batts overcharging

[freewill2008]

Nice going Yahoo!! This post is from 4 days ago!!

--- In WanderlodgeForum@yahoogroups.com, "freewill2008" wrote:
>
> Fred - this is where geography and a very different coach from mine limit the
ability to help. I can give some general ideas.
>
> One thought: Brand new components can be bad. Have you put a volt meter
right on the alternator + terminal? What does it read? If it is 20+ volts,
look for another regulator.
>
> Unless you measure 20+ volts right at the alternator, the new regulator is
doing its job. In a 12V system, the charge voltage might be as high as 14.5,
and the resting battery voltage can be as high as 12.8. You you must ask
yourself where 20+ volts comes from.
>
> As I understand it, you have house and engine battery sets. Each battery set
should be grounded to the chassis, as are the coach components. There is a
total voltage potential of 25+ volts between the 2 battery banks. If a volt
meter somehow measures the total voltage potential across both battery banks
because a ground is missing somewhere along the line, you could see 20+ volts on
the meter. This same fault could possibly make the regulator think maximum
charge is needed, resulting in the high current reading.
>
> Try reading from the + terminal of one battery set to the + terminal of the
other. Is the voltage above 12.8 resting or 14.5 with the alternator turning?
If so, there is most likely a bad ground that has eluded you. It is even
possible that the ground problem is internal to some component.
>
> That is the view from 10,000 feet. The devil is in the details of how your
coach is wired. I think that a person with diagrams in front of them or someone
with extensive experience with your coach's electrical system is needed to take
this further.
>
> It is late and I could be totally wrong. I often am
>
> Bob Griesel
>
> --- In WanderlodgeForum@yahoogroups.com, "Fred Hulse" wrote:
> >
> > Ground problem would make sense,
> > but I am out of ground points to check!
> > I don't know where else to look for grounds but will enjoy any suggestions.
> > Thanks Bob
> >
> > Fred
> >
>