Reply
 
Thread Tools Search this Thread Display Modes
 
Old 09-21-2012, 10:51 PM   #1
j Z
1 Rivet Member
 
1979 23' Safari
Great Falls , Montana
Join Date: May 2009
Posts: 14
Outback Power Inverter

I salvaged 2 outback power inverters from a truck at work. Has anyone ever used one in their airstream?

Would it even be useful for running 120V appliances? I think that it would run down the batteries quickly. I have 2 marine deep cycle batteries. Not sure how much capacity.


Model : VFX2812M
Input: 12V
Output: 23.3A at 120V AC


__________________

__________________
j Z is offline   Reply With Quote
Old 09-21-2012, 11:47 PM   #2
Rivet Master
 
1974 Argosy 20
2014 20' Flying Cloud
Kooskia , Idaho
Join Date: Jul 2009
Posts: 4,591
Outback makes excellent inverters. That VFX2812M is a 2800 watt model. True sine wave output, still on the market today for about $2000 +

The key to their battery life is their current at idle. I didn't do a lot of research as to what that is but probably around an amp or so. Other than idle current, they tend to be about 90% efficient when actually operating a load.

You scored a real find there. Wish I had one of those work trucks around to scavenge.

Learn more by googling outback VFX2812M
__________________

__________________
idroba is offline   Reply With Quote
Old 09-21-2012, 11:54 PM   #3
Rivet Master
 
1974 Argosy 20
2014 20' Flying Cloud
Kooskia , Idaho
Join Date: Jul 2009
Posts: 4,591
I just found the spec sheet. Idle takes 20 watts, which at 12 volts is about 1 3/4 amps. Pretty high if it is just siting around doing nothing, but no problem if it is cycled on and off with whatever you want to run.

You want to sell one cheap? LOL
__________________
idroba is offline   Reply With Quote
Old 09-22-2012, 04:12 AM   #4
Well Preserved

 
1993 21' Sovereign
Colfax , North Carolina
Join Date: Jun 2003
Posts: 20,193
I seem to remember that 2800 watts at 120v AC will be roughly 280 amps draw at 12v DC. Of course, I haven't had my coffee yet this morning...
__________________
Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.
Terry
overlander63 is offline   Reply With Quote
Old 09-22-2012, 08:09 AM   #5
Rivet Master
Commercial Member
 
lewster's Avatar
 
Vintage Kin Owner
Naples, FL , Hood River, OR
Join Date: Dec 2005
Posts: 7,279
Outback, along with Magnum Energy, make the best inverters and related equipment currently available (and made in the USA). I prefer the Magnums for their remote monitoring system, which is extremely easy to navigate. The Outback is quite a bit more complex.


When I install a 2800 watt inverter, there is usually at least a 600 amp/hour deep cycle battery bank attached to it and a rather robust solar array to keep those batteries charged. Remember that when converting a 120VAC load into a 12VDC draw, the rule of thumb is a factor of 10, meaning that if you want to run a 1200 watt microwave (10 amps AC draw), this would be pulling 100 amps from the battery bank, plus the residual amperage required to operate the inverter.

Also, the larger the load that the battery bank sees, the capacity of that battery bank is effectively reduced, as Peukert so elegantly theorized.

Bottom line; you have a couple of great inverters which are not really well suited for use in a trailer where battery weight is a critical issue.

Class dismissed!
__________________
Lew Farber...ABYC Certified Master Marine Electrician...RVIA Certified Master Tech ...AM Solar Authorized Installation Center...AIRSTREAM Solar & Electrical Specialist...Micro Air 'Easy Start' Sales and Installations
lewster is offline   Reply With Quote
Old 09-22-2012, 08:13 AM   #6
Well Preserved

 
1993 21' Sovereign
Colfax , North Carolina
Join Date: Jun 2003
Posts: 20,193
Thanks, Lew. It's good to know I remembered more or less correctly through the coffee grounds this morning...
__________________
Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.
Terry
overlander63 is offline   Reply With Quote
Old 09-25-2012, 11:52 AM   #7
j Z
1 Rivet Member
 
1979 23' Safari
Great Falls , Montana
Join Date: May 2009
Posts: 14
I have one of the inverters running in the garage. It has been running a 100W bulb for an hour so far. I also ran the microwave for a minute. The inverter handles them fine.

Realistically, I am not sure what benefit a high capacity inverter would be. I suppose I could use it to run the microwave for a few minutes without having to fire up a generator. What would you use it for?

Now what to do with them...
I think one would be plenty for a 23' Airstream, that leaves another one to sell or barter. I would like a gas inverter/generator. Maybe a Yamaha 2800W?

JZ
Attached Thumbnails
Click image for larger version

Name:	2012-09-25_10-14-07_149.jpg
Views:	81
Size:	158.1 KB
ID:	168972  
__________________
j Z is offline   Reply With Quote
Old 09-26-2012, 06:25 AM   #8
Rivet Master
 
Skater's Avatar
 
1995 30' Excella
Bowie , Maryland
Join Date: Apr 2005
Posts: 2,344
Quote:
Originally Posted by j Z View Post
Realistically, I am not sure what benefit a high capacity inverter would be. I suppose I could use it to run the microwave for a few minutes without having to fire up a generator. What would you use it for?
Our camper has a ginormous inverter installed; it'll run everything but the air conditioning. We haven't camped without electricity too much so far, but as of now I'm wondering the same thing as you. Running the microwave or the toaster oven (we do not have a built-in oven) are the only things I can think of...and on our recent dry camping trip, I turned off the microwave's circuit breaker before firing up the inverter, and we left the toaster oven at home to save space! We simply planned meals that did not require either one on that trip.
__________________

__________________
1995 Airstream Classic 30' Excella 1000
2014 Ram 2500 Crew Cab with Cummins 6.7L Diesel

Sold but not forgotten: 1991 Airstream B190
Sold: 2006 F-250 6.0L Powerstroke Supercab
Skater is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 05:52 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.