There is only one way they could test, and then anounce that there was R F containment and that the GFI would kick in in case of an unpredicted surge. They would have to have a complete unit, with complete internal parts in operation and a full containment housing to test the R F containment. Beer,you prove everyones opinion that you are looking forward to arguing about what you do not either understand or, that you just want to argue. The company I believe believes that us investors do not have to be spoon fed every detail, they assume that most of the investors are smart enough to understand the very principals of testing. JMO