Discussion on “Megger and other tests on suspension insulators” (Hunt), “experiences in testing porcelain insulators” (Creighton), “a new method of grading suspension insulators” (Marvin), Cleveland, Ohio, June 28

F. W. Peek, Jr.: I would like to say a word of warning on the danger of misinterpreting data, especially in regard to insulator testing. I have noticed that there is a great tendency to do this. For instance: The conclusion that a certain specified test is better than another test, and selects the good insulators from the bad, because a greater percentage of insulators are destroyed by that test, may be erroneous. It is, perhaps, best to take a practical example by way of illustration.