Much of my equipment is connected by wires - TV aerial to computer, Tyros(USB)to computer, phone/router/broadband to computer so if there are electrical storms about or if I go away, the TV aerial is unplugged, the phone is unplugged (overhead lines being vulnerable) and mains supply to all the expensive equipment is unplugged. (It multi-sockets from one mains socket so usually only 1 plug has to be pulled to do the trick).

john