1,000 youtube videos about this.
Some made by a member or two of this forum.
If you plan on doi g it yourself, watch a dozen or so of the videos.
If you plan on a pro doing it, just hand them the inverter.
I asked the same question when I was putting in my inverter.
Honest,
Watch the videos.
Pictures... A thousand words... Yadda yadda.
https://www.donrowe.com/Xantrex-Free...gaAmVkEALw_wcB
{xantrex 3000w behind the kitchen drawers is what I settled on, professionally installed. I chose the spot, they did the STUPID amount of hours of labor.)