On Apr 11, 8:01*pm, David Nebenzahl wrote:
On 4/11/2011 10:32 AM harry spake thus:

The modern grid tie/connected "transformerless" inverter manipulates
the DC output from the panels so that they run on their "sweet spot"
ie the most efficient voltage and current. It self connects/
disconnects to the mains as and when there is sufficient light operate
the panels. I t uses the mains sine wave to generate it's own sine
wave on the AC side. The current delivered is indeed dependant on the
output voltage it dleivers *to "push2 that current back into the
mains.

Bull****.

Bit on the topic here.
http://en.wikipedia.org/wiki/Kirchhoff%27s_circuit_laws
http://en.wikipedia.org/wiki/Grid_tie_inverter

Apparently you didn't even *read* that second article. It says:

* *The grid tie inverter must synchronize its frequency with that of the
* *grid (e.g. 50 or 60 Hz) using a local oscillator and limit the voltage
* *to no higher than the grid voltage.

Re-read that last phrase: "limit the voltage to no higher than the grid
voltage".

You don't "push" electricity from your solar installation into the grid
by raising the voltage, as someone here postulated. It just don't work
that way.

--
The current state of literacy in our advanced civilization:

* *yo
* *wassup
* *nuttin
* *wan2 hang
* *k
* *where
* *here
* *k
* *l8tr
* *by

- from Usenet (what's *that*?)

Yes it does. Electrical current flows from a point of higher
potential to a lower point. The very first thing you learn. Ohm's Law.