EMS 50C

[one_dusty_hoot]

Howard,
Personally I believe it a good practice to
always turn off when starting or stopping
the generator. On shore power, I do the same
but the load on switching is the transfer switch
contact killer for generator or shore. Set
the position with as small a load as possible.
The charger can use a lot of current especially
if batteries are low and not switched off.
bob janes, 87fc35, greenville, sc



--- In WanderlodgeForum@yahoogroups.com, wrote:
>
> Bob,
> When I start to crank my generator or shut the generator
> down should the selector switch be in the off position.
> And would the same hold true when connecting and
> disconnecting shore power.
> Howard Truitt
> Camilla, Ga.
> 86 PT40
> >
> > From: "one_dusty_hoot"
> > Date: 2007/03/26 Mon PM 08:49:07 EDT
> > To: WanderlodgeForum@yahoogroups.com
> > Subject: [WanderlodgeForum] Re: EMS 50C
> >
> > One of the strongest and most common sources of
> > high voltage spikes is from inductive kickback when
> > voltage is removed from a motor or relay or coil or
> > an inductive load. External causes would include
> > lightening or large power equipment or loads changing.
> >
> > Consider the automotive spark ignition, as points
> > open the coil field collapses presenting a hi voltage,
> > in thousands of volts jumping the spark plug gap.
> >
> > This same principle hold true in our coach relay coils
> > as a switch or contacts open. Many times you can notice
> > a spark when this happens under the right conditions.
> > Automotive relays sometimes have a small diode in
> > parallel with the coil to shunt this high voltage.
> > Sometimes a small capacitor is placed across the switch
> > contacts to do the same thing much the same as the
> > condensor was placed across the ignition points to
> > prevent them from burning. Just look at all the
> > relays in a coach, my goodness.
> >
> > If I use the manual transfer switch I like to do so
> > when connected to the least systems or components. The
> > same thing holds true for contacts there arching when
> > a load is switched or removed.
> >
> > For the ATs it would not take the care that you or I
> > would removing the load before activation, it just
> > switches, when certain conditions are met. All the
> > more reason to have the EMS downstream of the ATS.
> >
> > I don't believe it beneficial to have the EMS on the
> > generator side before th transfer switch either. Why
> > not mount between the transfer switch and the main
> > panel?
> >
> > bob janes, 87fc35, greenville, sc
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > --- In WanderlodgeForum@yahoogroups.com, wrote:
> > >
> > >
> > > > Ralph,
> > > What little I know or understand about electricity will fit on
the
> > head of a nano needle.
> > > As I previous stated I think our greatest exposure to a
possible
> > bad power situation is at the post in the parks. If the post
checked
> > ok why not plug the cord to the post and then plug the cord to
the PT
> > 50 to check the cord. For those who still have worries about the
> > generator install a hard wired unit on the generator output
before it
> > connects to any transfer switches. This set up with the portable
and
> > hard wired unit would cost about $600.00 for the two units. Do
the
> > portable now and the hard wired one to the generator next year.
Still
> > some cheap insurance.
> > > Question; What if you are in a park that only has 30 amp
service.
> > How would this work then would you then need PT30 or will the
PT50
> > read the 30 amp ok.
> > > Howard Truitt
> > > Camilla, Ga.
> > > 86 PT40
> > >
> >
> >
> >
> >
>