"John Rumm" wrote in message
o.uk...
On 23/09/2013 15:16, tony sayer wrote:

Is it all Capactive and how do they perform Galvanic isolation between
the mains and the panels, surely theres no direct connection?..

IIRC until recently the yanks banned non transformer inverters for grid
tie applications because of the lack of isolation.



In days of yore the PV array ran at very low voltages (panels in parallel) &
a tranformer was neccesary.
In domestic arrays they are all in series these day,running at around
600-700 volts