Lecture 11: Earth Resistance Test - Part 1

This video describes the basic understanding of the Earth Resistance Test. It explains the theory behind the fall of potential method (FOP) {1:48} and derives the expression to help understand why it is called FOP {3:23}. Furthermore, it provides the connection diagrams that to conduct the test along with detailed methodology in accordance with IEEE 81 {9:30}. It also provides the rules about probe spacing defined in international standards {14:00}.