I doubt the utility would allow that to be hooked up.
I agree.
I was actually surprised at the amount of specs listed and the claim of up to 94% efficiency. Don't think I really believe all those claims. It's also just funny that they say maximum DC input power of 1100W but only at 30.2 volts. You'd have to put panels in parallel to achieve that, and it's not the way anyone else does it.
The biggest problem I see, even bigger than no UL listing, is no mention at all of ground fault detection and interruption.
Most likely these things, if they are not actually dangerous, are a ripoff, and their real efficiency is very low, and/or they will just fail after not much use. If people are stupid enough to go for these and install them without a permit, my guess is at best they will never last long enough to pay themselves off. And that is if the person doesn't have a smart meter that
adds energy exported to their bill.
If you connect them up to a power strip with male plugs which then outputs to master male plug, how would each unit know if the line is energized from other units or from the grid when the master plug is unplugged?
hmy:
The same question could be asked about Enphase or any GT inverter setup with multiple inverters (including you and your neighbor both having solar systems). The answer is it isn't a problem. Even if the inverters don't lose the frequency clocking when the grid goes down (and they'll probably lose it), they can't maintain voltage on the whole grid, so the voltage will fall out of their range and they'll shut down.