RV News RVBusiness 2021 Top 10 RVs of the Year, plus 56 additional debuts and must-see units → ×
 


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 11-17-2020, 09:51 PM   #1
2 Rivet Member

 
2019 27' Tommy Bahama
Foothill Ranch , California
Join Date: Jul 2020
Posts: 40
Powered Electrical Outlet in AS While Moving???

Hi!

I'm sure this is a newbie question, but we're trying to figure out if this will work. We are bringing a small second refrigerator/freezer that runs off both a cigarette lighter and regular plug in - but it won't fit in our truck.

We are hoping that there is a "live" electrical outlet in the AS that we can plug into for 2 ~3 hours - only while we are underway. The truck has a huge alternator and I know a small amount of electricity can travel from truck to trailer...but I would assume that I need to have the inverter on during this time (batteries are fully charged).

Assuming there is no way to power this through a DC connection (is there?), would I be okay in this scenario running the inverter? And are only some plugs powered by the inverter, or all all of them?

Our destination has full 50 amp service.

Any help would be appreciated!!!
Mark of SJC is offline   Reply With Quote
Old 11-17-2020, 10:07 PM   #2
Rivet Master
 
Wrangler's Avatar
 
2019 19' Flying Cloud
Renville , Minnesota
Join Date: Jul 2015
Posts: 510
Your trailer should have an inverter that provides 1500 watts of 110 V AC. My FC has an inverter supplied outlet under the dinette. This may be enough power to run your small refrigerator.
__________________
I currently camp in a 19í Flying Cloud towed by a Nissan Frontier.
Wrangler is offline   Reply With Quote
Old 11-18-2020, 04:31 AM   #3
Rivet Master
 
overlander63's Avatar
 
1993 21' Sovereign
Colfax , North Carolina
Join Date: Jun 2003
Posts: 21,254
The inverter is probably 1000 watt. It will need to be physically turned on, with the indicator light glowing green on the switch panel, and will only power the outlets labeled for the inverter.
__________________
Terry
overlander63 is offline   Reply With Quote
Old 11-18-2020, 09:49 AM   #4
Rivet Master
 
kidjedi's Avatar
 
1972 25' Tradewind
1976 31' Excella 500
1974 31' Excella 500
1975 24' Argosy 24
Denver , Colorado
Join Date: Jul 2015
Posts: 741
If the portable fridge runs on both AC and DC, why wouldn't you use a 12v connection in the trailer so you're running the fridge directly off the house batteries and (and your alternator) while driving? If you use the inverter to power it with AC 120v, you're using the same source, just wasting power on the conversion.
kidjedi is offline   Reply With Quote
Old 11-18-2020, 10:01 AM   #5
Rivet Master
 
batman's Avatar
 
1964 22' Safari
modesto , California
Join Date: Jul 2010
Posts: 1,038
^^^ Ditto^^^Kidjedi. Just use a 12V cigarette lighter connection inside the trailer!!! Inverters are horribly inefficient and will suck the life from batteries in a hurry.

-Dennis
batman is offline   Reply With Quote
Old 11-18-2020, 10:22 AM   #6
Half a Rivet Short
 
2017 30' Classic
Carlisle , Pennsylvania
Join Date: May 2017
Posts: 9,053
Hi

How much does the "small fridge" pull on 12V? 5A ... 10A .... 20A ... it could be anything in that range. Best to check this first.

*IF* it pulls 20A, your batteries are good into the ~80AH range when fully charged. You would get your ~3 hours run time, but arrive with near flat batteries running off 12V. If you toss the 5A or so of "overhead" from the inverter on top of that, you are getting pretty close. This of course *assumes* your batteries are indeed fully charged and that they still deliver full rated capacity.

The wires that run from the front of your truck way way back into the trailer are only just so large. The truck alternator drops back once the battery in the truck is topped off. Otherwise it will boil your truck battery. The net result is that if you get 5A though that wire you are doing pretty well. It's not going to be a big help *if* the fridge is in the 20A range.

Best bet, no matter what the rating is: Fill it up the night before. Let it run on shore power (like in the garage). Get it good and cold *before* you put it in the trailer. That will minimize the current draw, regardless of what the max numbers are.

Indeed the fridge *probably* doesn't pull full rated power all the time. There are some that do ....

Bob
uncle_bob is offline   Reply With Quote
Old 11-18-2020, 10:24 AM   #7
3 Rivet Member
 
2016 Interstate Grand Tour Ext
Brookhaven , Georgia
Join Date: Jun 2016
Posts: 238
Blog Entries: 1
I use a Goal Zero 3000. You might look at a 1500 also if you just need power for a few hours. REI currently has 20% off for members.
coasttocoast is offline   Reply With Quote
Old 11-18-2020, 10:25 AM   #8
2 Rivet Member
 
2021 27' Globetrotter
Mount Pleasant , Michigan
Join Date: Jan 2019
Posts: 34
Blog Entries: 1
Quote:
Originally Posted by kidjedi View Post
If the portable fridge runs on both AC and DC, why wouldn't you use a 12v connection in the trailer so you're running the fridge directly off the house batteries and (and your alternator) while driving? If you use the inverter to power it with AC 120v, you're using the same source, just wasting power on the conversion.
Newer Airstreams do not come with a 12 volt cig lighter plug, only USB. If this is something you plan to do regularly it would be more efficient to install a 12volt receptacle. While I am no electrician I have read the simplest way is to convert one of your USB ports.
__________________
2021 Globetrotter 27FB Twin Copenhagen Cream ~ On Order
2020 Ram 2500 Laramie 6.4 B&W 7" Drop Hitch
2019 FC 19CB ~ Sold
2012 Ford Explorer ~ Retired
"I don't know Margo"
TrailDude is offline   Reply With Quote
Old 11-18-2020, 11:26 AM   #9
Rivet Master
 
1988 32' Excella
Robbinsville , New Jersey
Join Date: May 2012
Posts: 1,279
Quote:
Originally Posted by TrailDude View Post
Newer Airstreams do not come with a 12 volt cig lighter plug, only USB. If this is something you plan to do regularly it would be more efficient to install a 12volt receptacle. While I am no electrician I have read the simplest way is to convert one of your USB ports.
Please realize USB ports are 5V "IF" they are supplied by 12V (should be in trailer) you would need to tap into the power supply line or replace the port with lighter outlet or lighter outlet with USB ports or tap into power for a 12V light.

Also note requirement to check amp draw most 12V circuits in ASs (at least were) 20 amp, this really means 15 amps continuous.
Wazbro is offline   Reply With Quote
Old 11-18-2020, 11:48 AM   #10
Silver Star
 
rucos's Avatar
 
1970 23' Safari
Victoria , British Columbia
Join Date: Apr 2014
Posts: 306
I tried using my slow cooker thru the inverter a year ago while on the road .... I left the house with the cooker already working ...put it in the sink to be safe and plugged into the inverter. When we arrived 4-5 hrs later the stew was ready.... no great battery drain but it was only maintaining temp as I preheated at home. I also was going to a full service site so I wasn't worried about running my batteries to low.
It was nice walking into the trailer smelling of dinner on arrival....... ive only done it once but it worked fine.
rucos is offline   Reply With Quote
Old 11-18-2020, 12:06 PM   #11
Rivet Master
 
2018 25' International
Slidell , Louisiana
Join Date: Sep 2017
Posts: 3,036
If this is infrequent it may not be worth the hassle of rigging up 12v power. The inverter draws 2A itself and the refrig unit between7 and 10. The vehicle will charge back 3-10 Amps so if your batteries are charged or nearly so, the inverter is an inefficient but easy option
__________________
Brian
BayouBiker is offline   Reply With Quote
Old 11-18-2020, 02:59 PM   #12
Refugee from Napa, CA
 
Photobum's Avatar
 
2015 25' FB Flying Cloud
Madison , South Dakota
Join Date: Apr 2014
Posts: 577
Images: 5
Blog Entries: 1
I do something similar but I use a Yeti 75.
Photobum is offline   Reply With Quote
Old 11-18-2020, 04:25 PM   #13
2 Rivet Member
 
2018 30' Classic
2004 30' Classic
1972 Argosy 22
Meridian , Idaho
Join Date: Nov 2017
Posts: 89
Last year we spent 4 months on the road with a BiMart special 3 cubic ft freezer. We carried it in the back of our truck and kept it plugged in when ever we stopped for the day. The freezer was good enough to maintain the contents frozen the entire trip. The result was the same as the built in refer/freezer. Both appliances maintained their temperatures for 4 plus hours of travel during the summer.
cbburke is offline   Reply With Quote
Old 11-25-2020, 12:28 PM   #14
Rivet Master
 
2018 30' Classic
Jacksonville , Florida
Join Date: Apr 2018
Posts: 627
My California friends drive up to Alaska on normal years in July. They have replaced the dinette table with a small chest freezer. They fish for salmon and fill up the freezer. Once frozen they drive back home stopping each night to plug in and "recharge" the coldness of the freezer.

Every year or so here, in Florida, there is a big storm that looses our power. Freezer is off for up to 12 hours but usually 6-8. Once storm over we plug in the generators outside.

In those two cases the frozen stuff stays frozen. Maybe you don't have to worry about continuous power.
Overstreet is offline   Reply With Quote
Old 11-25-2020, 09:53 PM   #15
1 Rivet Member
 
Yuma , Arizona
Join Date: Jul 2006
Posts: 19
Those small freezers use a 12V compressor. So if you use the inverter you convert 12v to 110v and then 110v to 12v. Your actual wattage will be less using 12v into the freezer.
gcarter is offline   Reply With Quote
Old 11-25-2020, 10:12 PM   #16
Rivet Master
 
TouringDan's Avatar
 
1966 24' Tradewind
1995 34' Excella
Lynchburg , Virginia
Join Date: Jun 2006
Posts: 3,777
Powered Electrical Outlet in AS While Moving???

I have experience with two different compressor fridges. Both of them draw about 50 watts and run about half the time. The compressors are 12v so it is best to just operate them using a 12v outlet in yourAirstream. If you donít have a 12v outlet, then I would install one (or several).


Here is a photo of the 35 qt compressor fridge that I carry in my car. We also carry a 65 qt compressor fridge in the bed of our Tundra- the TV for our Airstream.

DanClick image for larger version

Name:	IMG_5856.jpg
Views:	3
Size:	276.2 KB
ID:	383834
TouringDan 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Refrigerator while moving Kittyfeet On The Road... 37 02-03-2016 08:02 PM
Motorhome steps deploy while moving! Pomfritz Steps 9 08-22-2010 10:29 AM
Ever ridden in trailer while moving? Astroboy On The Road... 28 06-28-2010 07:04 AM
Moving around in cabin while in motion ViewRVs Airstream Motorhome Forums 13 07-18-2005 01:13 PM
Moving sewage outlet? Stefrobrts Waste Systems, Tanks & Totes 15 12-10-2004 02:28 AM


Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.



All times are GMT -6. The time now is 06:43 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.