Abstract :
E. E. F. Creighton: It seems to me that Mr. Young´s tests are in the direction to satisfy the users of lightning arresters. The users have felt for some years the need of tests aside from those of the manufacturers, developers, and designers of lightning arresters. It is important to recognize the limitations of the tests as carried on outside of a thoroughly equipped laboratory. On one hand there is the possibility of separating the sheep from the goats. There are on the market types of lightning arresters which are really not dischargers at all and have no particular value. The operator should be able with his tests to separate arresters of good discharge rate from those that have practically no discharge rate.