Got 20 175W panels for free...what kind of Grid Tie inverter would be good

[J.P.M.]

Okok...just found out that my combined voltage will be to much for that inverter on one string...and it only has one...
So i learned from talking about it with you that i need a two string one...or with 750 volts max voltage...
What a bummer...hoped to come out of that game with a few bucks...on the side...

As Litttleharbor suggests: Continue reading the book and seeking more information from other reliable sources (note: probably and not necessarily vendors or those with skin in the game). Learn from the mistakes of others. You won't live long enough to make them all yourself.