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Old 11-22-2020, 04:10 PM   #1
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Propane or Generator

Hi Everyone, does anyone have any opinions about whether to run the fridge on propane or generator power while rolling down the road? Which is better, safer or cheaper?
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Old 11-22-2020, 04:22 PM   #2
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IF..IF you are running gen for 'other' uses (A/C Unit etc) then run fridge on AC

If running gen JUST for fridge...WHY
Use the Propane and roll on
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Old 11-22-2020, 04:29 PM   #3
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Yep. My Norcold 1200 sips propane. Presently paying $2.25/gallon. No extra hours, oil, oil filters, fuel filters or diesel fuel required for the ONAN.
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Old 11-22-2020, 04:34 PM   #4
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Quote:
Originally Posted by Old-Biscuit View Post
IF..IF you are running gen for 'other' uses (A/C Unit etc) then run fridge on AC

If running gen JUST for fridge...WHY
Use the Propane and roll on

Excellent answer.
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Old 11-22-2020, 08:09 PM   #5
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The rule of thumb for shore power is multiply the cost of electricity in KWH x 28. Whichever costs less one KWH or one gallon of propane is the lowest operating cost. For your genset you must do the math.
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Old 11-22-2020, 09:07 PM   #6
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Propane unless I need to run the generator for other stuff.
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Old 11-22-2020, 11:22 PM   #7
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Depending how many hours you're driving, our refrigerator kept cool enough without either for 6 hr. or so.
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Old 11-22-2020, 11:30 PM   #8
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Neither ....

Assuming you haven't just returned from several days boondocking and suffered a large battery bank discharge during which there was no solar to charge the battery bank and you do not have severely depleted batteries which are over-taxing the alternator, then the alternator will happily keep an inverter powered up (assuming your coach has a high amperage solenoid to charge house batteries from the alternator). The draw on the alternator would only be around 30A to produce the typical 3A@120VAC that the electrical heating element uses in a propane fridge. (From the ratio 3A x 120VAC = 360 watts and 360 watts =(also) 12VDC x 30A)
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Old 11-23-2020, 05:46 AM   #9
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Originally Posted by ur2fast4me View Post
Hi Everyone, does anyone have any opinions about whether to run the fridge on propane or generator power while rolling down the road? Which is better, safer or cheaper?
I have always run on lp while traveling.
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Old 11-23-2020, 07:53 AM   #10
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I run on automatic. If the generator is running, it switchs to 120 volts.
If no generator, it switchs to propane.

I would need to rewire the outlet to run on inverter power. If I do that, I would need to manually switch to gas if I was dry camping. 35 amps all night is a battery killer.

Why add complexity to an automatic system ??

And turn it off for hours at a time, no thank you ! We travel for 6 months, so we're not just transporting beer, burgers and hot dogs for a weekend. What's frozen needs to stay frozen.
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Old 11-23-2020, 09:22 AM   #11
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refrigerator

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Originally Posted by twinboat View Post


I run on automatic. If the generator is running, it switchs to 120 volts.
If no generator, it switches to propane.
(Or no power pedestal.)

Ditto.


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Old 11-23-2020, 10:57 AM   #12
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Newbies and OCD owners love to fixate on this question, but it's not worth the time to discuss. Any of the available methods works fine and none is notably safer or cheaper or "better" than another.
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Old 11-23-2020, 12:20 PM   #13
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The amount of propane used to run a fridge is very minimal and costs less than running a generator.
Run it in the "auto" mode and never worry about it.
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Old 11-23-2020, 12:48 PM   #14
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Somewhat along the same lines, running either the fridge or furnace on LP while driving, know most say they do it without issue, it just seems like the air flowing across the burner chambers while driving will create a low pressure conditions and pulling the flame outwards. Has anyone ever seen a video or such that shows the effects of the moving air while driving?
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