I am only bringing 220/240 into my panel because I am just controlling a single element. I use 10-gauge THHN for the SSR and connectors, but what I'm trying to figure out now is what gauge I need to go into the Auber with both hot legs on terminals 9 and 10. I was planning to keep using the same THHN but I'm realizing now this is problematic due to the small stud size on the Auber.
So what is tested and works? Thanks.