I can handle most solar jobs now and feel good doing them. But the big grid-tied systems, with all their inverters and interconnection rules, still stop me cold. I've come a long way, and those complex ones still make me want to call someone with more years than me.
More people experience this than they realize.
You can handle most PV work, but the complex grid-tied systems still stump you.
If this sounds familiar, the Library can help you find the bigger picture.