BobK207 wrote:

If a small diameter ground rod (1/2" or 5/8") doesn't give the 25 ohms
(or less) to ground.....would a larger (3/4" or 1") diameter rod in the
same soil do better?

Is the soil the culprit or the soil / rod contact resistance? The
larger diameter rod contacts more soil..better grounding behavior?


The problem is the soil resistance. Increasing the rod diameter does not
change the resistance by much. I agree with other posts that increasing
the length with a longer rod or multiple rods is effective.

bud--