u/SolarDerka

I have a Multiplus 2 48/5000 and it buzzes and hums all the time. The noise is low frequency which I understand is part of the system. However when there is no load (or small load ) should it be humming ? The sound doesn't bug me because it's in a Shed, I'm just curious if this does this for other people with the same inverter

Can I use a 16 foot 2x6 for the longest part ? This pergola will be using 6x6 posts. Also does a 2x8 have a longer span?