AC dead short?

[Curt Sprenger]

Bill,
Thanks. I have a call to PMMI. Hope to hear from them today.

Curt Sprenger 1987 PT38, Anaheim Hills, Calif.



pattypape wrote:

> Hi Curt, Welcome back,
>
> This is a PMMI modification to the polarity lights in the outside
> power connection panel. These old Birds were designed before the GFI
> was popular. Behind this small panel is a few resisters and light
> emitting diodes. The resistors and lights must be changed as not
> to trip the 110v 15/20 amp GFI circuit breaker, which we rarely use.
> Therefore this issue does not arise very often. The 30amp and 50 amp
> pedestal plugs do not have GFI so there is no problem here.
>
> We do not have a dinette with a polarity light panel, so I am not
> familiar. We do have one polarity light in the top overhead dash far
> to the right near the AC volt meters.
> PMMI will repair the unit or they will send the parts for you to
> solder and replace. I did my own replacements, but if one is not
> familiar with solder in a tight place you may choose to send it to
> PMMI for a more professional job.
>
> Doug Hampton http://www.pmmi-inc.com/ <http://www.pmmi-inc.com/>
>
> This panel can be removed and the AC connections can still be used.
> Careful 110/220 volts can be present.
>
> Bill 88 FC Michigan
>
> --- In WanderlodgeForum@yahoogroups.com
> , Curt Sprenger
> wrote:
> >
> > Bill,
> > Is this the modification where we send the dinette control panel
> to PMMI
> > for mods? How about the polarity tester lights in the shore power
> > connection panel, or does this get resolved by the modification to
> the
> > dinette control panel?
> >
> > Curt Sprenger 1987 PT38, Anaheim Hills, Calif.
> >
> >
> >
> > pattypape wrote:
> >
> > >
> > >
> > > Is this a GFI protected pedestal outlet???
> > > Usually they are on the 15/20 amp park hook- up circuits.
> > > An old Bird will trip GFI if the polarity tester lights
> > > have not been modified.
> > >
> > > Bill 88 FC
> > >
> > > --- In WanderlodgeForum@yahoogroups.com
>
> > > , "John Ely"
> > > wrote:
> > > >
> > > > I have just developed a dead short in two circuits of my AC
> > > system.
> > > > The front receptacles and the vacuum cleaner circuits appear
> to be
> > > > dead shorted. If they are on, the park circuit breaker (30
> amps)
> > > > trips. If they are off, I get normal service from the park. The
> > > > thing these two circuits have in common is the AC meters on the
> > > > dinette control panel. The front receptacles circuit provides
> > > power
> > > > to one of the dinette AC meters while the vacuum cleaner
> circuit
> > > > provides power to the other. I have removed all loads from both
> > > of
> > > > these circuits with no change. I've pulled the cover from the
> > > breaker
> > > > box and these breakers have only one 12ga. wire going to them,
> so
> > > the
> > > > meters must be wired in downstream somewhere, but I have no
> idea
> > > where
> > > > or even where to look. As a possibly related matter, about two
> > > weeks
> > > > ago, after a lightning storm near Montreal, I noted that the
> > > polarity
> > > > indicators in my service box (the place where shore power is
> > > > connected) are no longer working. As there are also polarity
> > > > indicators on the dinette panel, there is a possible likage
> here.
> > > > However, there was a two + week span of normality between the
> loss
> > > of
> > > > polarity lights in the service box and the short circuits in
> the
> > > AC
> > > > panel. No incident occurred prior to the AC loss; it worked
> fine
> > > in
> > > > one park, we took a long (15 hour ferry ride) with the DC
> systems
> > > shut
> > > > down, and had the shorts as soon as I plugged in at the next
> park.
> > > > If anyone has any ideas as to what this might be, I'd be glad
> to
> > > hear
> > > > them.
> > > > John Ely, 86PT40, Rapid City, SD On the road in Clarke's Beach,
> > > > Newfoundland
> > > >
> > >
> > >
> >
>
>