Plug-in PV backfeeding a receptacle? Is this legal?

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Joethemechanic said:
And how do we know that the inverters are good quality? Those things could be backfeeding dirty electricity back to the line. That could ruin their neighbors appliances and all the wiring in their house
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Those are good reasons to still require UL1741 compliant grid-tie inverters regardless of hardwire or plug-in connection methods.
 
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