Hi,
My system is an older SunPower installation with positive-ground PV panels. One of the inverters (SPR-3300) failed and I need to replace it (the battle is described here). It seems that the inverters on the market are all transformer-less (TL) these days. What are my options?
This seems to suggest the conversion may be possible?
Any suggestions?
Regards,
Michal
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Options to convert existing grounded system to use transformer-less inverter?
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