Where does the root of your interest come from? Do you live in a rural area that does not have reliable power for surge supression, I would get a whole house surge suppressor and be done with it. As far as fluctuations in voltage,have you measured the voltage at your wall throughout the day, to see if there is any fluctuations? If your in a major metropolitan area, this should not be an issue...


If you could elaborate as to the rational for your question, I think you will get a better answer.