To reduce the chance of electrical shock and fires, service panels need to be grounded. Proper grounding directs unwanted electrical current from the home into the ground. Installing a grounding rod ...

(1) Below permanent moisture level. If practicable, pipe electrodes must be embedded below the permanent moisture level and be free from nonconductive coatings such as paint or enamel. Exception: A ...

Along with the development of new instrumentation, the test procedure itself was also standardized. By “walking” the potential probe toward the current probe and graphing the measurements, the ...