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Old 07-15-2016, 03:05 PM   #1
In Over My Head
 
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Going Shore powered Only...

So my wife and I have recently purchased an Argosy 24 and I am in the process of setting it up as a mother-in-law suite in back of the house. When I purchased it, the interior had already been gutted (no plumbing, no electrical, etc.) and there didn't seem to be any reason to keep a 12v system until today...

I have a Dometic Penguin II on the way and the thermostat that goes with it will only run on 12v. Dometic hasn't been much help other than confirm that the thermostat requires 12v. I was hoping that someone on here can confirm for me that I can simply hard wire in a step down transformer/reducer and still be able to use the thermostat.

Thanks! Sometimes I feel like I am in over my head...
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Old 07-15-2016, 03:18 PM   #2
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The thermost at at my house is low voltage 12 volt. A small transformer is mounted on the wall above the inside CK breaker box. It powers the thermostat and the door bell. I would suspect it is the same in most homes.
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Old 07-15-2016, 04:23 PM   #3
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A transformer will only supply 12 volts AC. If the thermostat requires 12 volts DC, you will need to find a way to rectify the AC to DC.
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Old 07-15-2016, 04:54 PM   #4
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Find an Airstream owner who has upgraded their 'battery burner' Parallax converter to a new 3-stage unit.

It will provide you with a continual supply of '12VDC' which is actually 13.6 VDC and makes for a perfect DC power supply. No batteries required!!!
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Old 07-15-2016, 09:18 PM   #5
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Find an Airstream owner who has upgraded their 'battery burner' Parallax converter to a new 3-stage unit.

It will provide you with a continual supply of '12VDC' which is actually 13.6 VDC and makes for a perfect DC power supply. No batteries required!!!
Lewster, that sounds like a great solution! Do you know anyone who has one lying around?? Or a recommendation on where to find one??
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Old 07-15-2016, 09:36 PM   #6
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Lewster, that sounds like a great solution! Do you know anyone who has one lying around?? Or a recommendation on where to find one??
PM sent!
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Old 07-15-2016, 10:41 PM   #7
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12VDC wall plug power supplies "bricks" are readily available. PM me I can send you one. We use them in our products. Look on www.DIGIKEY.com or Amazon. Great selection.


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Old 07-15-2016, 10:49 PM   #8
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http://www.digikey.com/product-detai...455-ND/3094981


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Old 07-16-2016, 08:06 PM   #9
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http://www.digikey.com/product-detai...455-ND/3094981


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or this...

and if my pix didn't show up, it's an ac to dc adapter. Two prong ac plug on one end and cigarette outlet on the other.
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Old 07-17-2016, 07:55 AM   #10
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Thanks for the plug in ideas. I think I am going to go with something that I can mount behind the walls or in a panel somewhere. I am probably going to go with Lewster's suggestion and install a parrallax to run any 12vDC applications that come up!
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Old 07-17-2016, 11:13 AM   #11
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Remember that all of the wiring for lighting (and the lights themselves if they're still installed, you didn't say how "gutted" the trailer is) are 12V, so it's useful to have a 12v source to run the built-in lighting, otherwise you'll have to have lamps which take up valuable space. A cast-off Parallax converter as Lewster mentioned would be a good source that should be cheap/free from someone who just wants to be rid of it.
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Old 07-17-2016, 12:32 PM   #12
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Of course you know you still need a 12 volt battery and charging system to run the brakes if you ever pull the trailer? and 12 volts to run the lights, water heater, and refigerator? and the vent fans? Shore power only to me would still include a converter and batteries.
Yes, you probably can go all 110 with complete rewiring and non RV appliances if you never are going to pull it. You will probably need the interior skins off to do a decent job of that.
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Old 07-17-2016, 02:04 PM   #13
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Maybe I'm overthinking this, but couldn't you simply use a cheap 12V adapter? I got to have thirty of them laying around from various junk appliances.
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Old 07-18-2016, 07:47 AM   #14
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1975 Argosy 24
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Since it is fully gutted (skins removed, wires stripped, plumbing removed, no insulation, new subfloors) there are no electronics or lighting from the original (except the stove fan). I am working from square one here! In some ways that is nice, as I can have it exactly how I want it, but it is difficult that I have nothing to look at and base decisions off of.

I am trying to get my hands on a parallax to run things that are trailer specific like the thermostat, AC Unit, Fan, and maybe a few lights.

I think I would rather have one large, central inverter than to have lots of small ones in the wall.

And I don't have any intention to pull this anywhere until i am selling it, so I am not really concerned about the break away brakes.

Thanks again for all the ideas and thoughts! It has been very helpful!
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