Hypothetically, if I have a 240watt solar panel on my RV and at 12v, doesn't that equate to 2880watts? I have a ~1300watt dometic rooftop a/c. Can someone break down the math for me why that solar panel (under ideal sun) wouldn't be able to power that a/c *and* charge whatever is in excess to the battery? I remember when I started doing the research, someone had spec'd out that I needed 3 x 240watt panels for whatever reason and I'm trying to comprehend.