I am putting together an electric rig. Mostly, I am following Kal's beautifully documented example. Although, my initial conditions are a little different. I have a 120/240V outlet that my range is using, which I plan to use. The breaker seems to indicate that I have 40 amps available, despite the outlet being a 50 amp.
My first question: this is just a breaker in the picture, right, not a GFCI?
Assuming that it is not a GFCI, where would I get a 40 amp one? Most seem to only be 30 amp. Just use one for a spa? How are spa panels different? Do they support 4 wire? Is ok to oversize a GFCI? How would I test a GFCI?
Also, do you put GCFI in the control box typically?
I know this is a lot of questions
Thanks for reading