24 Volt

[Jay Darst]

The calc for amps at 110 volts to amps at 12 volts-

say 15 amps at 110V = 15 x 110 = 1,650 watts

1,650 watts divied by 12volts = 137.5 amps(at 12V)

because inverters are, at best, about 92% efficient, ya need to
divide the 137.5amps by 92% efficiency, you'll get 149.5 amps (at
12V) to run a 15 amp/110V load.

Fortunately, the roof tops only draw about 12.5 amps at 110V, so-
12.5 x 110 = 1,375watts divided by 12V = 114.6amps divied by 92%
efficiency = 124.5 amps at 12V

Throw in a bit of curve now.

My alternator is actually 14 volts, so the equation looks like this:
12.5 x 110 = 1,375watts divided by 14V = 98.2amps divided by 92%
efficientcy = 106.75 amps at 14V to run my front A/C. Pretty easy
for the 14volt/320amp alternator. Plus the inverter likes to have
plenty of voltage/amperage to convert to 110V, makes it work not so
hard ;~}

Jay Darst
85PT40
Springfield, IL





--- In WanderlodgeForum@yahoogroups.com, "Chuck Wheeler"
wrote:
>
> Just remember that to provide 15amps at 24 volts will require your
generator
> to provide about 83 amps at 24 volts or about 170 amps at 12 volts
in
> addition to the load it is currently carrying.
>
> - Chuck Wheeler -
> 82 FC 31 SB
> Fort Worth, TX
>
> -----Original Message-----
> From: WanderlodgeForum@yahoogroups.com
> [mailto:WanderlodgeForum@yahoogroups.com] On Behalf Of
putneyflash@...
> Sent: Sunday, April 16, 2006 7:52 PM
> To: WanderlodgeForum@yahoogroups.com
> Subject: Re: [WanderlodgeForum] 24 Volt
>
>
> Blair: could you run the fron ta/c off the inverter by tapping
into the
> correct leg? seems that would work better than having the dash a/c
repaired
> and converted from 12 to 134
>
> re brake FC-35SB albany, ga. "sagecoach"
>
> -------------- Original message from Blair :
> --------------
>
>
> Lee, the Outback's are the best in the business and I sell all
types.
> Blair in Oregon
>
>
>
> At 05:57 PM 4/15/2006, you wrote:
> >Hi electricians, My iota charger had an unfortunate encounter
with a
> >welding outlet and I am in the market for a new one. One thing
leads
> >to another and I am now looking at running the front A/C off an
> >inverter for those minor cooling days without the generator.
Then I
> >looked at the currents and now am considering going to and LN 24v
> >alternator(maybe 130A at 24V) and an outback VFX3524M inverter.
It
> >looks to me like I could hook the inverter to one of the 30 amp
legs
> >and put the inverter loads there and that way the existing
selector
> >switch would still work as isolation for the 50 amp and gen use?
> >
> >I have read through the writeup by
> ><http://ourodyssey.blogspot.com/>http://ourodyssey.blogspot.com/
but
> >I don't want THAT much automation. I think the 24v bus would be
an
> >asset for a future solar addition also.
> >
> >Any thoughts on 24V?
> >
> >Lee Benson, 85FC35, Carthage, IN
> >
> >
> >
> >
> >
> >SPONSORED LINKS
> ><http://groups.yahoo.com/gads?t=ms
> <http://groups.yahoo.com/gads?
t=ms&k=Recreational+vehicles&w1=Recreational+v
>
ehicles&w2=Wanderlodge&w3=Automotive+maintenance&w4=Recreational+vehi
cle+dea
>
ler&w5=Used+recreational+vehicles&w6=Automotive+radiators&c=6&s=163&.
sig=DAU
> kCKkU7Dzhn_ObWmSYTw>
>
&k=Recreational+vehicles&w1=Recreational+vehicles&w2=Wanderlodge&w3=A
utomoti
>
ve+maintenance&w4=Recreational+vehicle+dealer&w5=Used+recreational+ve
hicles&
>
w6=Automotive+radiators&c=6&s=163&.sig=DAUkCKkU7Dzhn_ObWmSYTw>Recreat
ional
> >vehicles
> ><http://groups.yahoo.com/gads?t=ms
> <http://groups.yahoo.com/gads?
t=ms&k=Wanderlodge&w1=Recreational+vehicles&w2
>
=Wanderlodge&w3=Automotive+maintenance&w4=Recreational+vehicle+dealer
&w5=Use
> d+recreational+vehicles&w6=Automotive+radiators&c=6&s=163&.sig=Z-
8HJdysB3QLP
> j9U0JvqYQ>
>
&k=Wanderlodge&w1=Recreational+vehicles&w2=Wanderlodge&w3=Automotive+
mainten
>
ance&w4=Recreational+vehicle+dealer&w5=Used+recreational+vehicles&w6=
Automot
> ive+radiators&c=6&s=163&.sig=Z-8HJdysB3QLPj9U0JvqYQ>Wanderlodge
> ><http://groups.yahoo.com/gads?t=ms
> <http://groups.yahoo.com/gads?
t=ms&k=Automotive+maintenance&w1=Recreational+
>
vehicles&w2=Wanderlodge&w3=Automotive+maintenance&w4=Recreational+veh
icle+de
>
aler&w5=Used+recreational+vehicles&w6=Automotive+radiators&c=6&s=163&
.sig=IF
> 4u_5wI8Pmy34cC1O9CxA>
>
&k=Automotive+maintenance&w1=Recreational+vehicles&w2=Wanderlodge&w3=
Automot
>
ive+maintenance&w4=Recreational+vehicle+dealer&w5=Used+recreational+v
ehicles
>
&w6=Automotive+radiators&c=6&s=163&.sig=IF4u_5wI8Pmy34cC1O9CxA>Automo
tive
> >maintenance
> ><http://groups.yahoo.com/gads?t=ms
> <http://groups.yahoo.com/gads?
t=ms&k=Recreational+vehicle+dealer&w1=Recreati
>
onal+vehicles&w2=Wanderlodge&w3=Automotive+maintenance&w4=Recreationa
l+vehic
>
le+dealer&w5=Used+recreational+vehicles&w6=Automotive+radiators&c=6&s
=163&.s
> ig=z6_XahaeYHfELr6o72IW1A>
>
&k=Recreational+vehicle+dealer&w1=Recreational+vehicles&w2=Wanderlodg
e&w3=Au
>
tomotive+maintenance&w4=Recreational+vehicle+dealer&w5=Used+recreatio
nal+veh
>
icles&w6=Automotive+radiators&c=6&s=163&.sig=z6_XahaeYHfELr6o72IW1A>R
ecreati
> onal
> >vehicle dealer
> ><http://groups.yahoo.com/gads?t=ms
> <http://groups.yahoo.com/gads?
t=ms&k=Used+recreational+vehicles&w1=Recreatio
>
nal+vehicles&w2=Wanderlodge&w3=Automotive+maintenance&w4=Recreational
+vehicl
>
e+dealer&w5=Used+recreational+vehicles&w6=Automotive+radiators&c=6&s=
163&.si
> g=UGEY5km4L-kXbDI4ZSadEw>
>
&k=Used+recreational+vehicles&w1=Recreational+vehicles&w2=Wanderlodge
&w3=Aut
>
omotive+maintenance&w4=Recreational+vehicle+dealer&w5=Used+recreation
al+vehi
> cles&w6=Automotive+radiators&c=6&s=163&.sig=UGEY5km4L-
kXbDI4ZSadEw>Used
> >recreational vehicles
> ><http://groups.yahoo.com/gads?t=ms
> <http://groups.yahoo.com/gads?
t=ms&k=Automotive+radiators&w1=Recreational+ve
>
hicles&w2=Wanderlodge&w3=Automotive+maintenance&w4=Recreational+vehic
le+deal
>
er&w5=Used+recreational+vehicles&w6=Automotive+radiators&c=6&s=163&.s
ig=ePNV
> MmISsCWgTnMq_4GlXA>
>
&k=Automotive+radiators&w1=Recreational+vehicles&w2=Wanderlodge&w3=Au
tomotiv
>
e+maintenance&w4=Recreational+vehicle+dealer&w5=Used+recreational+veh
icles&w
>
6=Automotive+radiators&c=6&s=163&.sig=ePNVMmISsCWgTnMq_4GlXA>Automoti
ve
> >radiators
> >
> >
> >----------
> >YAHOO! GROUPS LINKS
> >
> > * Visit your group
>
> "<http://groups.yahoo.com/group/WanderlodgeForum>WanderlodgeForum"
on the
> web.
> > *
> > * To unsubscribe from this group, send an email to:
> > *
> >
> subject=Unsubscribe>Wan
> derlodgeForum-unsubscribe@yahoogroups.com
> >
> > *
> > * Your use of Yahoo! Groups is subject to the
> > <http://docs.yahoo.com/info/terms/>Yahoo! Terms of Service.
> >
> >
> >----------
>
>
> [Non-text portions of this message have been removed]
>
>
>
>
> YAHOO! GROUPS LINKS
>
> Visit your group "WanderlodgeForum" on the web.
>
> To unsubscribe from this group, send an email to:
> WanderlodgeForum-unsubscribe@yahoogroups.com
>
> Your use of Yahoo! Groups is subject to the Yahoo! Terms of
Service.
>
> [Non-text portions of this message have been removed]
>
>
>
> _____
>
> YAHOO! GROUPS LINKS
>
>
>
> * Visit your group "WanderlodgeForum
> <http://groups.yahoo.com/group/WanderlodgeForum> " on the web.
>
>
> * To unsubscribe from this group, send an email to:
> WanderlodgeForum-unsubscribe@yahoogroups.com
> subject=Unsubscribe>
>
>
> * Your use of Yahoo! Groups is subject to the Yahoo! Terms of
Service
> <http://docs.yahoo.com/info/terms/> .
>
>
> _____
>
>
>
>
> [Non-text portions of this message have been removed]
>

[indynotjones]

--- In WanderlodgeForum@yahoogroups.com, "Jay Darst"
wrote:
>
> My brother Dan has a 1986 FC35RB with the 3208 and a 320amp Leece
> NeVille Alternator. The 160 and 320 use exactly the same mounting
> hardware with no modifications at all- NONE.
>
I looked at one just superficially at the repair shop the other day.
It sure looked bigger. I am on my way over there today. It sure
doesn't look like there is much room around the Motorola that is
there now.

> You will need to change the cable that runs to the alternator as
the
> factory stuff is 1 gage, we replaced ours with 1/0 cable. This can
> be a big PITA on the FC's, pretty easy on the PT.
>
As I think and read it seems that this is the real issue. I already
have the 1/0 and 2/0 cable so that expense is not an issue. Those
sizes are a real bear to work with, let alone threading it around a
greasy frame. That was why I was looking at 24v to start with. I
guess it boils down to the work to change cable v.s. the expense of a
vanner DC-DC converter and all the other stuff to add a 24V bus.

> The 320 amp unit is $1,500 new. Buy a take off(from ambulance or
> fire truck) on E-Bay.
>
The shop has a new one on the shelf, $1,000. I am not sure I need to
go all the way to 320 A.
>
>
Too many variables. This is too much thinking for an old retired guy.
At least it is not cold anymore so I have some time before I have to
worry about getting a Proheat although that is in the back of my mind
when looking at pumps, etc (12 vs 24).

Lee Benson, 85FC35, Carthage, IN