You are totally right in what you say, but that´s not what i was traying to show. I surely wasn´t clear in my statement anyway. What i was trying to say is that earthing th secondary depends on the application, in this case, in which type o applied part the equipment will have. In this case, if the manufacturer says it´s BF or CF but it´s connected to an earthed secondary the tests will fail (as you kindly pointed out). I agree that´s not the best example, but it happens a lot in my laboratory. And, besides, it´s the only that i remember that is written on a standard, and it seemed to me that´s what the original poster wanted when he talked about the "i think...' or "in my opinion.." posts.
