Reno: What I said above was a 'spec' by the project engineer & architect for that structure. BTW, commercial garage, maintenance shop for a gov't branch.
Basically, if the EE/PE/Arch specs 3/0 Cu to 10' x 3/4" rods, 25' apart in a triangle, that's what they get. No, it's not NEC required. & I don't believe I said that anywhere.
