A DC Power Conundrum

[bluebirdfitz]

Thanks John,
"As you know, the circuit will require both a good
> positive and a good negative from the same DC source;
> and a break in either will prevent the circuit from
> properly operating"--John

I think you are right. An old neighbor of mine thought it had to be the ground
of the
fridge being on a different ground. I will check that tomorrow. Thanks for
your help.

--- In WanderlodgeForum@yahoogroups.com, John Suter wrote:
> If you don't receive a better answer, try "trouble
> shooting" the DC circuit with a good digital
> voltmeter.
>
> As you know, the circuit will require both a good
> positive and a good negative from the same DC source;
> and a break in either will prevent the circuit from
> properly operating. I'd be especially suspicious of
> the ground/negative side.
>
> Additionally, if either the positive or negative
> leads/wires possesses an unusual resistance, a drop in
> the voltage may occur under load - which can occur
> with corroded connections and/or too small gauge of
> wire and too high current/amperage required by the
> appliance - therefore, if you can't measure the
> voltage under load and without load at the refrig
> itself, measure the voltage at the hot lead of the
> solenoid post at the same time as the refrig is
> presumably operating, to determine if the voltage is
> dropping under load. Voltage drop problems take a bit
> of time to isolate and correct.
>
> John Suter
>
>
>
>
> --- bluebirdfitz wrote:
>
> > My Dometic refrigerator on our 78FC 31 is currently
> > getting its DC power from the genset
> > battery. I am not really sure why, but I am trying
> > to shift it to drawing on the house banks
> > instead. There is a solenoid on the inside right of
> > the genset tray. I found a hot lead on
> > the solenoid post, but when I hook up the terminal
> > that was on the genset battery post to
> > the solenoid post the fridge won't turn on. Is
> > there a difference in the power supply that I
> > don't know about (and I'll admit, I don't know
> > much!). Is there a better way to access the
> > DC on the house banks?
> >
> > Thanks for any help.
> >
> > John Fitz
> > 78 FC31
> > Maynard MA
> >
> >
> >
> >
>
>
>
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