AEMC 6422 User Manual page 30

2.3.6.1 Auxiliary Rod Positioning
To ensure measurements are not distorted by interference, we recommend
repeating the measurement with the auxiliary rods placed at a different distance
and in another direction (for example rotated 90° from the first alignment).
If the measurements match, they are valid. If they differ significantly, they could
be influenced by factors such as ground currents or a groundwater artery. In this
case, we recommend driving the auxiliary rods deeper into the ground.
If in-line rod configuration is not possible, you can place the rods in an equilateral
triangle. To validate the measurement, move the S rod on either side of the line
HE.
2.3.6.2 Ground Measurement Tips
To avoid "cross-talk" with the measurement current, do not route the

connecting cables of the rods near or parallel to other cables
(transmission or power supply), metal pipes, rails, or
To reduce auxiliary rod resistance, add one or more rods, two meters

apart, in the H (S) circuit of the
Another way to reduce rod resistance is to drive the rods deeper and

firmly pack the earth around them, or sprinkle water on
After completing the measurement, reconnect the grounding strip
before restoring power to the installation.
30
circuit.
Ground Tester Models 6422/6424
fences.
them.