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12 volt car heater direct to solar panels yes/no?

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Posted by Survival Bill on September 29, 2003, 12:10 am
I would like to use a spare solar panel to run a 12 volt car heater would a
4 amp panel be enough and just a fuse in between or will running something
like this directly off a panel damage the panel? I was thinking of using
this to heat the trailer during the day to keep things from freezing during
the day when I am out....


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Posted by Solar Guppy on September 29, 2003, 12:29 am
What is the current draw of the heater ?

Regardless , you can directly connect the panel without worries but I
wouldn't get your hopes up about getting the trailer warm off a 50 watt peak

Posted by DeJaMooooo on September 29, 2003, 3:30 am
 I have a car heater... they draw a lot of power and keep my one hand warm.  
Not a good device, maybe you have a better one than I do.

Was informed once by a painter that they put a lightbulb in their paint storage
container and it kept their paint from freezing night and day.  The container
was well insulated.

Let us know what works...

Ramble'n Randy
(I have a 65 AMC Rambler Wagon with no working  heater fyi)

Posted by Doug Dotson on September 29, 2003, 3:38 am
 A 4 amp panel is probably around 65 watts. Do you think a 60 watt
light bulb would provide enough heat for your purpose? It might
depending upon how well insulated the trailer is.


Posted by Joe Fischer on September 29, 2003, 5:07 am

           Is it a heater, or a heater fan you are talking about?
I don't think I have ever seen a 12 volt heater on a car,
some cars have heater fans or squirrel cage blowers that
draw 4 to 10 amps.

           A resistance heater would have to draw a lot
more than 4 amps to put out useful heat.     Most small
110 volt heaters with fans are 700 watts or more, and
at 12 volts 700 watts would be more than 60 amps.

Joe Fischer

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