I am looking at getting solar for my caravan. I have followed the calculations in the sticky to get what I think I need to get.
I have done the following calculations:
Fridge - Engel - MT45FCP 40L Fridge/Freezer - 370w/24hrs @ 12v
TV - 36w/hr x 6hrs = 216w @ 12v
Computer - 12.5w/hr x 6hrs = 75w @ 12v
So, total power required for 24hrs = 661w (I rounded up to 700w)
This is what I ended with:
Solar Isolation is 3.3
Solar array 318w
Battery 291ah @ 12v (5 days)
I was thinking of 2 x 200w panels @ 12v to round up to 400w.
I currently have a Plasmatronic PL40 charge controller that I got from a friend when they upgraded. It can use 24v panels to charge 12v batteries.
My questions to the gurus: are my calculations correct? Can I use 24v panels? Which is better, 2 x 12v (lower AH) batteries or 2 x 6v batteries (higher AH).
Thanks in advance
I have done the following calculations:
Fridge - Engel - MT45FCP 40L Fridge/Freezer - 370w/24hrs @ 12v
TV - 36w/hr x 6hrs = 216w @ 12v
Computer - 12.5w/hr x 6hrs = 75w @ 12v
So, total power required for 24hrs = 661w (I rounded up to 700w)
This is what I ended with:
Solar Isolation is 3.3
Solar array 318w
Battery 291ah @ 12v (5 days)
I was thinking of 2 x 200w panels @ 12v to round up to 400w.
I currently have a Plasmatronic PL40 charge controller that I got from a friend when they upgraded. It can use 24v panels to charge 12v batteries.
My questions to the gurus: are my calculations correct? Can I use 24v panels? Which is better, 2 x 12v (lower AH) batteries or 2 x 6v batteries (higher AH).
Thanks in advance
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