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05-20-2012, 10:27 AM
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#1
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Member
Join Date: May 2012
Location: Evansville,In
Posts: 32
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Fridge? 3-way or ??
How do I run the fridge while traveling? It is a 3 way fridge, right?
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05-20-2012, 11:20 AM
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#2
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Site Team
Join Date: Mar 2009
Location: Fraser Valley BC Canada
Posts: 7,015
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jaydeb -
Modern RV fridges are only 2-way, 110V AC or propane. Almost everyone on this forum uses propane to run their fridge while travelling. You won't find fridges operating on 12v other than in marine applications or other portable-type fridges.
__________________
2008 Cougar 5th Wheel 27RKS
2005 2500 GMC Duramax 
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05-20-2012, 12:11 PM
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#3
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Senior Member
Join Date: Jan 2011
Location: Austin, Tx
Posts: 1,910
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The 12V systems are all compressor type. The last number I read for the DC drain on a gas refrigerator was something like 17A per hour to operate the heater.
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05-21-2012, 12:07 PM
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#4
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Senior Member
Join Date: Mar 2012
Location: Oregon
Posts: 192
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Quote:
Originally Posted by Festus2
jaydeb -
Modern RV fridges are only 2-way, 110V AC or propane. Almost everyone on this forum uses propane to run their fridge while travelling. You won't find fridges operating on 12v other than in marine applications or other portable-type fridges.
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Not to get off the subject at hand here and with all due respect the fridge in my Lance 830 is 3 way as is the one in my sisters Fleetwood.
__________________
2012 Passport 26BHWE
2008 Dodge RAM 6.7 Cummins (I love my truck)
and a bunch of toys I don't need
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05-21-2012, 12:11 PM
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#5
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Senior Member
Join Date: May 2012
Location: North Florida
Posts: 1,241
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3-ways are not as common but they do exist. Most travel trailers and 5th wheels have 2-ways.
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2006 Keystone Hornet 29RLS (The Cracker Cabana)
2009 F-250 SuperDuty CC 6.8L/4.10 (The Black Pearl)
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05-21-2012, 02:10 PM
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#6
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Senior Member
Join Date: May 2011
Location: Carnation, WA
Posts: 190
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Some TT's Have 3-Ways
Festus2,
My 2010 Forest River R-POD had a 3-way.
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2011 Keystone Cougar 24RKS
2007 Cadillac Escalade
Prodigy P2 Brake Controller
Past Trailer:
Forest River R-POD RP-175
Past Tow Vehicle:
2008 Toyota Sienna 
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05-21-2012, 07:24 PM
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#7
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Site Team
Join Date: Mar 2009
Location: Fraser Valley BC Canada
Posts: 7,015
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Wrong Way
Sorry guys for going down the wrong way on a two-way street (or should I say 3-way) 
That's what happens when you talk before you think.
I stand corrected.
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2008 Cougar 5th Wheel 27RKS
2005 2500 GMC Duramax
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05-21-2012, 08:17 PM
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#8
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Senior Member
Join Date: Mar 2012
Location: Oregon
Posts: 192
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Your a stand up guy Festus. I really enjoy your being a part of a great forum.
__________________
2012 Passport 26BHWE
2008 Dodge RAM 6.7 Cummins (I love my truck)
and a bunch of toys I don't need
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05-22-2012, 01:37 AM
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#9
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Senior Member
Join Date: Mar 2011
Location: Pearl River, La.
Posts: 198
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Just curious, but what is the third way? I know electric and then propane are the two.
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2011 Toyota Tundra - (MGM) Mean Green Machine
2012 Cougar HC 291RLS - Cajun Riviera
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05-22-2012, 02:13 AM
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#10
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Permanent User Ban
Join Date: Mar 2012
Location: Bartlesville, Oklahoma
Posts: 1,124
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Quote:
Originally Posted by reubenray
Just curious, but what is the third way? I know electric and then propane are the two.
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A/C power
12v / Gas
12v only <- Not common in larger, 6-8+ cu ft 2 door fridges. Mostly in smaller single door fridges like the size you might find in a popup.
In these less common models, the 12v controls the board, and also provides power for the gas absorption heating element.
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05-22-2012, 03:16 AM
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#11
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Senior Member
Join Date: Sep 2011
Location: Northville NY in the Adirondacks
Posts: 2,128
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Quote:
Originally Posted by jaydeb
How do I run the fridge while traveling? It is a 3 way fridge, right?
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Do you know the model number and manufacturer of your fridge?
Do you have the manual?
__________________
'11 Cougar 326MKS loaded with mods
'12 Ford F250 SuperCab 6.7 PowerStroke Diesel
Amateur Radio: KD2IAT (146.520) GMRS: WQPG808 (462.675 TPL 141.3)
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05-22-2012, 04:37 AM
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#12
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Senior Member
Join Date: Mar 2010
Posts: 452
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Be aware that if you have a three way the 12v dc side draws a lot of current, and the cooling power can be limited by the gauge of the power line running to the fridge AND how much battery charge you have.
By accident I ran our fridge on 12v for just six hours and wound up with a dead battery but at least the food was still cold And that was while I was pulling the trailer and getting a small charge from the trucks DC side.
ron W.
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05-22-2012, 08:54 AM
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#13
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Senior Member
Join Date: Jul 2011
Location: 1 hour from Yosemite
Posts: 165
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Other then on a ferry, where would running on 12 volts be a benefit? If it would kill the battery in a few hours.
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2007 Chevrolet 3500 CC/LB Duramax/Dually 4X4 Mine r4tech, Reese Signature Series 18k +slider, duratrac, titan 62 gallon, diamond eye, Cheetah 64, EFI Live
2008 Chevrolet 2500 CC/SB Duramax 4X4 Hers r4tech, duratrac
2011 Keystone Fusion 405 TrailAir & Triglide, Centerpoint, gen-turi, 3 PVX-840T, XANTREX FREEDOM SW3012, G614
2013 Yamaha 242LS
2010 GMC Yukon The Bus
2005 Chevrolet 2500 CC/SB Duramax 4X4 Hers (sold)
2006 Jayco Jay Flight 31BHS (sold)
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05-22-2012, 09:57 AM
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#14
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Senior Member
Join Date: Sep 2011
Location: Northville NY in the Adirondacks
Posts: 2,128
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Quote:
Originally Posted by christopherglenn
Other then on a ferry, where would running on 12 volts be a benefit? If it would kill the battery in a few hours.
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You've pretty much answered your own question. For most folks, running a fridge on 12vdc is not very useful as it draws the battery down so much and so fast. I don't see much benefit at all.
I'm surprised to hear so many folks that have them and in fairly new trailers.
__________________
'11 Cougar 326MKS loaded with mods
'12 Ford F250 SuperCab 6.7 PowerStroke Diesel
Amateur Radio: KD2IAT (146.520) GMRS: WQPG808 (462.675 TPL 141.3)
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05-22-2012, 09:57 AM
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#15
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Site Team
Join Date: Jun 2009
Location: Venice
Posts: 5,346
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Quote:
Originally Posted by christopherglenn
Other then on a ferry, where would running on 12 volts be a benefit? If it would kill the battery in a few hours.
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Most RV 3 ways draw about 15 amps 12 v DC. If your TV supplies that or more there will be no drain on the battery at highway speeds.
12v DC is the least efficient method to operate the fridge on.
__________________
 Hank & Lynn
2007 Cougar 290RKS, E-Z Flex, 16" XPS RIBs ( SOLD  .. Gonna miss her ... looking for new 5r)
2004.5 Dodge 2500 QC, LB, 5.9HO, WestTach gauges, Ride-Rite
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