I hate to ask this in the midst of truly electrically qualified people
but.....

When van running, you're off shore power? IF so, alternator does it's job,
charger not connected.

When van not running, you're ready to connect to shore power.

Or is there concern that the van might be running while charger still on.
IF so....

Maybe install a relay between DC charger output and house DC system. Have
it trigger via alternator blue wire. Or is there too much lag time?

Neil.

On Thu, Sep 20, 2012 at 9:51 AM, Rocket J Squirrel <
camping.elliott@gmail.com> wrote:

I'm looking at rewiring my house battery charging system.
>
> I want to be able to switch between charging the battery from the
> alternator ..... and charging off my
> 3-stage DC > DC deep cycle charger
>

>
> To do this, I'm looking for a manual 3-position battery switch. I've
> already looked at West Marine's offerings and I can find either
> two-position (off/on) switches, or four-position (off/1/2/1+2) switches.
> The latter could be used but it's dangerous as the 1+2 position would
> connect the DC > DC charger's output to its input, resulting in a
> collision of universes and possible smoke.
>
> Two off/on switches could be used, but again, it would be possible to
> accidentally turn them both on, resulting in that collision of universes
> thing.
>
> Anyone know of a three position (1/2/off) battery switch?
>
> --
> Jack "Rocket j Squirrel" Elliott
> 1984 Westfalia, auto trans,
> Bend, Ore.
>

--
Neil n

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