Hi guys, I just recently purchased a 50-year old house in which all the receptacles in the living room are ungrounded. Since that's where I have my TVs and computers, I'd like to make sure they are protected in the event of a lightning strike. Today a building contractor suggested installing a GFIC breaker in the main breaker box, the logic being that if the lightning strikes, the breaker box is the initial point of entry and when the breaker trips, all my electronics will turn off before any damage occurs. Is his logic correct? Thanks in advance for everyone's input!