Of all the tests that contractors routinely perform on electrical installations, earth loop impedance testing creates the most confusion and uncertainty. Why is the test needed and which test method is it best to use? 

Peter Wade of Megger offers interesting insights into the past and present of equipment used to test electrical installations.

A good insulation tester is one of the most valuable tools an industrial maintenance engineer can have when working on electrical equipment. But how do you choose a “good” insulation tester? Peter Wade has all the answers for you.