I have some 24V inverters (24VDC to 110AC) and I thought someone on here could answer my questions.

1. I see there are modified and pure sine wave inverters. What devices need modified or pure sine waves?

2. I have a battery that is 102 VDC. I can disconnect it to get 24VDC at four different points. If I don't disconnect it, would there be any electrical issues if I just attach the inverters to each battery? Would that cause some type of ground loop?