Wenner Method

[jpower]

Hi friends,
During soil resistivity measurement for a large power/substation, is there any strict rule for maximum probe spacing in the four point (Wenner) method? Is there any strict rule for the number of search direction or location of soil measurement? Is there any specific reference in this respect?

 

[bphgravity]

Follow the metering equipment instructions.

 

[jpower]

There are various metering devices with various capabilities. When measuring the soil resistivity for a large site, what's the criteria for selecting such a device?

 

[bphgravity]

This is a specific skill that requires specific training and education.