I was wondering if anyone could provide me with more information regarding DC-to-AC inverters. Specifically, I'm wondering what stops me from hooking up a power source (i.e. lead acid battery, small solar panel, etc) to an inverter and discharging it into the wall. I know that grid-tie systems exist for applications such as solar power. If the inverter can reliably convert to 120 VAC at 50-60 Hz with a modified sine wave output, is there any danger to simply plug this into the wall? Would a pure sine wave inverter be better for this purpose? Alternatively, if you know of some good websites or other sources that can explain this concept to me, I'd love to know.