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...
(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.