I have a 500w and a 1kw turbine from the same manufacturer as Ivan's turbines. I would say under some conditions the graphs supplied are conservative as the peak output from my turbines are similar to the peak values Ivan states in the basic specification list and not in the graphs. I have seen 36Amps from my 500w 24v turbine in stronger winds! Even on days when there seems to be just a light breeze i see around 1:5 of the rated output
minimum.
The only problem I have encountered was that one of the guy wire adjusters worked itself loose and the 500w generator tower fell leaving a rather large hole in my garden and a broken blade! (15+vat

) Now I have fitted lock nuts on the guy wire adjusters!
I am working on my own synchronizing inverter design at the moment to connect these things up to my house without requiring batteries I will post how I go on.
Phil