Amprobe GP-1 Earth-Tester-Ground-Probe - Manual (Page 6)

Soil Resistivity Test:
Test A (Wenner Method)
Function
selector switch
Test
lead/cable
input jacks
Page 6
2) Connect the four test cables to C1, C2, P1 and P2 input jacks (as indicated in drawing
above). Please note color codes.
3) Insert four test rods in the ground, equally spaced from each other, using preset distance
values in tables on following page.
1) Turn the FUNCTION switch to
Soil Resistivity (see drawing below).
BLACK
C1 P1 P2 C2
GREEN RED BLUE