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Old 09-28-2012, 06:58 PM   #15
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By coincidence while looking for something else today, I found a document at Airstream's website that lists amp draws for both 120 volt and 12 volt. I have attached the pdf from their website.

Airstream, Inc :: Specifications

It's a page of all sorts of specifications, brochures, manuals, etc... This came from way down the page at the end of the trailer section.
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File Type: pdf Amp Draw 120 volt and 12 volt.pdf (23.0 KB, 104 views)
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Old 09-30-2012, 08:18 PM   #16
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Idroba - Thanks for explaining. Crystal clear now.


Vswingfield - appreciate the link.


And thanks to everyone else as well for the helpful information.
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Old 09-30-2012, 08:26 PM   #17
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Originally Posted by TouringDan View Post
Thanks Idroba. some comments: Amps = watts/ volts.

Fridge- Mine is 180 watts, so 180/120= 1.5 amps.

Microwave- 800 watts out, 1200 watts in, so 1200/120= 10 amps

Hair Dryer- 1500 watts, so 1,500/120= 12.5 amps

Thanks especially for your comment about energy consumption for the furnace fan on old versus new furnaces. I have an original furnace and it seems to take a lot of battery power to operate the fan. If I can cut the current usage in half, by replacing the furnace, I will probably do this because I do a lot of boondocking.

Dan
What you want to do is replace the furace with a calalitc heater. No electric is required to run it.
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Old 10-01-2012, 06:29 AM   #18
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I've actually been able to run the A/C, but have been careful to not run any other appliances at the same time (eg, coffee pot). I've shut the A/C off and waited several minutes before turning it back on again. Is there a minimum time to wait so as not to hurt the compressor?
In theory, you should be able to run the A/C on a 20 amp shore power circuit. Check the breaker on the A/C in your camper - it's probably a 20 amp circuit. I would do this with the shortest, heaviest cord possible (I actually have a 30 amp-to-20 amp adapter I picked up off Amazon for a couple dollars).

Yes, you should wait a couple minutes before restarting, but I don't know what that is - 5 minutes or something like that. We had an incident this summer where someone accidentally flipped our power off, then turned it back on right away when they realized their error. This caused the A/C in the camper to trip its breaker (it was over 90 degrees inside and out, hot sun - pretty much the worst situation possible). It took me a couple minutes to figure out what was wrong, so when I discovered the tripped breaker I was able to flip it back on immediately. (I was confused because the A/C's control panel still had lights on...I have no idea how that thing is wired!)
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Old 10-10-2012, 10:07 AM   #19
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What you want to do is replace the furace with a calalitc heater. No electric is required to run it.
Bigventure

Sorry about the delayed response.

Unfortunately there is no free lunch. I am quite uneasy about sleeping with a catalytic heater operating since the manufacturers do not recommend it, and the output from a catalytic heater is significantly less than from a furnace (8,000 btu/hr vs. 20,000 btu/hr). That is not to say that there is not a place for a cat heater, like during the day when it is warmer and I am not sleeping, but for sleeping at night, I think I see a new furnace in my future.

Dan
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Old 10-10-2012, 08:16 PM   #20
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Unfortunately there is no free lunch. I am quite uneasy about sleeping with a catalytic heater operating since the manufacturers do not recommend it, and the output from a catalytic heater is significantly less than from a furnace (8,000 btu/hr vs. 20,000 btu/hr). That is not to say that there is not a place for a cat heater, like during the day when it is warmer and I am not sleeping, but for sleeping at night, I think I see a new furnace in my future.
My experience of cold weather camping has taught me this: Nothing beats a working furnace. It just does a far better job at spreading the heat around the camper than an electric or catalytic heater. I don't think you'll regret the purchase. (I usually camp in Pennsylvania around Christmas, with lows below freezing and highs just above freezing. This year we'll be camping in mid-January, too.)

To save some propane, we'll usually turn on the heat strip in the A/C during the day just to take some load off the furnace (the furnace will still run from time to time, but nowhere near as often).
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