Measurement
Soil resistivity & rod spacing
Never Trust One Soil Resistivity Test.
PIS Engineering Academy & Insights
Go beyond the reading on the meter. Explore the failures, decisions and field lessons behind protection systems that work.
An earthing system. A living landscape.
Performance is only part of the story.
Every case begins with a better question.
Have a site challenge? Bring the evidence to our engineering team.
The field library
Browse by engineering challenge, explore your sector, or search a case number.
9 cases to explore
Measurement
Never Trust One Soil Resistivity Test.
Measurement
The earth grid was blamed. The test geometry was wrong.
Measurement
OPEN LOOP did not mean an open earthing system.
Measurement
One test method cannot describe every part of a solar plant.
Measurement
The meter showed 1 Ω. The isolated grid was actually far worse.
Measurement
The tester was calibrated. The test setup was not healthy.
Measurement
The wrong range can make a good instrument produce bad engineering.
Measurement
A large grid cannot be tested like a small rod.
Measurement
The auxiliary probes were inside the system they were supposed to measure from outside.