On Tue, 16 Dec 2014 15:08:36 +0000, Dennis@home wrote:

Grid tie inverters run the panels in series anyway - the inverters
normally take 600VDC input, depending how many panels you have.

(That's why fire brigades won't enter houses with solar panels to
put fires out.)

Pretty stupid really.
A 240V AC supply can have about 350V peak on it which is only a bit less
than 10 solar panels in series would be operating at.

Yeah but the 240 mains supply has a big switch that can isolate the
house wiring. With Solar PV and those volts and appreciable current
are "just there". The grid tie invertor should shut down when it
loses the grid but that DC is still present in wiring which is
located where? At least CU's or cutouts are normally in fairly common
places and within feet of where the mains enters the property.

--
Cheers
Dave.