Thanks for your responses!
Down sizing in this fashion is electrically safe, as the heaters are fixed loads in a parallel circuit, only drawing what they require... not exactly plumbing
Bond wire was what I was looking for... thanks!!
I worked for someone who had this installation rejected and I couldn't remember why.
And now I also remember why that rejection caused a lot of eye-rolling.
So I need 14/2 and 12/2 nmd cable with a #10 bond wire in them... Awesome thanks!!
I'll just fish it into the cables, if the supplier can't have it made for me.
