O olly Senior Member Location Berthoud, Colorado Occupation Master Electrician Jun 18, 2013 #1 How exactly do you go about testing to see if your ground rod is less then 25 ohms to earth? Put one lead on the rod and the other streached out and touching earth?
How exactly do you go about testing to see if your ground rod is less then 25 ohms to earth? Put one lead on the rod and the other streached out and touching earth?
infinity Moderator Staff member Location New Jersey Occupation Journeyman Electrician Jun 18, 2013 #2 Take a look here. They depict the 3 point testing and clamp on meter testing methods. IMO two rods are easier. http://www.esgroundingsolutions.com...-induced-frequency-ground-resistance-test.php
Take a look here. They depict the 3 point testing and clamp on meter testing methods. IMO two rods are easier. http://www.esgroundingsolutions.com...-induced-frequency-ground-resistance-test.php