What’s the difference on listed or unlisted ground rod?
Markings at the top of the rod.
minimum size requirement, unlisted needs to be thicker
Unless things have changed and I am not aware, Unlisted ground rods must be at least ⅝ inch in diameter. Listed ground rods must be at least ½ inch in diameter.
it’s still that
So why do you say unlisted needs to be thicker?
Isn’t 5/8 thicker than 1/2 inch?
Thank you very much for all your input.
Currently. But that could change.