why?
i ask that a lot too.
why can i run a 60A single circuit to my shed a mile away to weld with, and not do 2 G-rods?
why can i run a 4-wire 1/4 mile in the same building and not do G-rods?
why should i run a 3-wire 10' to an outbuilding and reground with 2 G-rods in close proximity to the serving buildings G-rods ( read into this, I double-dog dare ya!)
why does a disco rate more 'lighting protection" 30' from a mobiler home , that the home itself?
why is 'voltage gradient' not univerasl?
why?