None of those drills is suitable for driving ground rods. They are all
regular electric drills, with a conventional 3-jaw chuck and a
lightweight hammer action that depends on the chuck going round.

For driving ground rods, you need a different kind of 'hammer' drill
that has a separate high-impact hammer action, that can be used
*without* the chuck going round.


My mistake! I googled "hammer drill which was the wrong term, and
device. Instead, I should have used the term "Rotary Hammer" which is
the correct device one would use for driving ground rods. I have used a
Bosch model for many years.... an excellent device for driving copper
clad steel ground rods.... will actually crack and pierce rocks if they
are in the way.

The correct Bosch device can be found at:

http://www.tylertool.com/bosrotham.html


Ed K7AAT