I am considering a small 1kW solar system (4x 250-watt panels). The seller offers them in both 120v and 240v configurations with "micro-inverters". Given a 25-year panel warranty, could the amperage reduction and following lesser (but is it measurable?) heat output of having the inverters output 240v on the AC side have any measurable impact in longevity over running at 120v?
I can as easily do 120v as 240v. Running a line from the breaker box is not a problem. I'm just curious if there's any actual measurable benefit over time with running 240v instead of 120v. I use a 240v outlet for my computer just for the 1%-2% efficiency gain, so I don't need much of an excuse, but I have no idea if DC-AC conversion gains the same benefit.