I have 6 awg ground from main to sub-panel direct and 6 awg Neutral from inverter to sub-panel.Yup I’ve used these big blue nuts before. Really easy to use with how well built these are, and the wings make it easy to get leverage to crank down. It’ll work with any size wire you might have in there. Can’t remember if your ground is #6 (which is insanely oversized) hopefully it isn’t since #6 has very limited splicing options with wirenuts, and you tend to need to splice ground a lot more
Alumniconn was just for educational informing. These wirenuts are more appropriate
During city inspection, they said my loads were imbalanced so for every circuit I move to sub-panel, I have to also wire up N and G(romex). I am not sure if I need to do that if I have 6 awg coming into sub-panel
Glad to know I can use the wire nuts?