Grounding selectable on site.Decide on site what type of grounding is required as the Fronius IG Plus is field programmable for either positive or negative module grounding. Price: {price-updating} [wprebay kw=”solar+power+inverters” num=”86″ ebcat=”-1″] [wprebay kw=”solar+power+inverters” num=”87″ ebcat=”-1″]