As Dale suggests, there are places where you can't drive an 8
foot rod deep enough, My colleague Bill Gerrey lives in a section
of San Francisco where there is a layer of serpentine rock maybe
4 feet below the surface of the ground, and apparrently it's
nearly impossible to get through. A friend tried to drive a
ground rod through it for ham antenna safety purposes and when
they hit the rock the sledge nearly bounced back in his face
because the rod just wouldn't go down further. don't know what
the code requires for electrical grounding in that case, probably
a number of shorter rods.
to drive a rod that's
taller than you are without a ladder, you use a large chunk of
pipe with a cap on one end. You stand the rod where you
want it, put the capped pipe over the top and stand next it. You
raise the capped pipe with one hand while holding the rod further
down with the other, and let the pipe fall on top the rod.
Starts slow, and takes a while in hard ground, but beats sledging
from top of a ladder. Of course after you get down a ways, you
have to switch to a sledge because the pipe hits the earth.
tom
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