Amprobe GP-1 Earth-Tester-Ground-Probe - Manual (Page 7)

GP-1 PRESET DISTANCE VALUES IN FEET AND INCHES
Depth of the electrodes Distance between electrodes
2” 3’
3” 5’
4” 7’
6” 10’
9” 15’
1’ 20’
1’6” 30’
2’0” 40’
2’6” 50’
3’0” 60’
3’6” 70’
4’0” 80’
GP-1 PRESET DISTANCE VALUES - METRIC SYSTEM
Depth of the electrodes Distance between electrodes
5 cm 1 meter
10 cm 2 meters
15 cm 3 meters
20 cm 4 meters
30 cm 6 meters
40 cm 8 meters
50 cm 10 meters
65 cm 13 meters
80 cm 16 meters
95 cm 19 meters
110 cm 22 meters
125 cm 25 meters
Page 7
Soil Resistivity Test:
Test A Tables
(cont’d.)
TABLE 1
TABLE 2