Wow! I wasn't expecting that warm welcome. I am sorry to see that you have over 7500 posts. With that filthy attitude. I am surprised you lasted that long.
Look at this link and you'll see that it's not connected to the grid and that my affirmation wasn't totally wrong as the pump is 12V.
I am sorry for ever coming here to seek knowledge from people who know more then I.
THE REASON EXACTLY WHY I WANT TO CUT MYSELF FROM SOCEITY.
ADMIN: please freeze this account for I will not use it again.
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Well do not try to BS us my friend. There is no such thing as a tankless 12 volt water heater. There is not enough copper in the world to make the cables large enough to handle the current involved. A very tiny 3 gpm tankless water heater requires 9Kw and at 12 volts is 750 amps and would require a copper cables the size of your leg, and a room full of batteries weighing 10 tons to operate.
Thus it he crux of your problem 12 volts is for toys and RV application. 12 volt is extremely inefficient and expensive to use. Last thing you want in your home is is 12 volt system. You will go broke buying copper to keep power losses to acceptable limits. That is why utilities use high voltage, and all your home appliances use 120 and 240 volts.
As for your refrigerator the compressor is likely a 120 VAC motor. The controls might be 24 VAC but the compressor, lights, fans, and Defrost are all 120 VAC. Now what most off-griders do is use a 24 or 48 volt refrigerator made by someone like SunDanzer
As to your question how to convert 12 voltd DC to a higher voltage is real simple. You fist convert the 12 VDC to 12 VAC, step up the voltage through a transformer just like every inverter in the world does, and then recitify th eAC back to a higher voltage DC.Leave a comment:
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complete newbie question on 12v-110v-12v conversion
Hello.
I am new here and new to solar as well. In a very near future, I'll have the chance to go live in a modest container home of my design out in the woods where electricity companies WILL NOT service me. I'll be living my dream off-grid
My calculations are all made. My DIY solar panels are under construction. Off-grid inverters are on their way. Solar charge controler are here already. ETC.
I have only 1 concern... Which I don't know how to ask about, less again how to search this forum for : converting the few applicances I need to 12V. I find very futile to produce 12V (rather ±18V in the panels), store it, convert it to 110V to feed the house wiring, then convert it back to something else (almost all appliances have a transformer inside because almost no applicance use 110v directly). So I have about everything I need directly in 12V. Coffeemaker, toaster oven, on demand tankless water heater etc...
The thing is that I find stupid to convert 12V to 110V for the fridge when itself has an transformer inside (I checked) to transform it into whatever voltage it needs.
Could someone nudge me in the right direction to tell me what it is called I am looking for? Can't I convert 12v directy to the "watever voltage" mentionned above?
Best regards to you all.
Marc
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