thanks. I appreciate the reply. (Not a Lester from Langhorne creek? Probably not.) On the number of inverters, we originally were quoted on two 5 kw hybrid inverters same brand, model etc, then it was changed to two different brands models because thats the way the engineer does it! These are now on three different PV strings but common connection up to the 240V. 1 has no batteries and 1 does. There is no data or other connection between them. All info I could find that this was only ok for sa ...