Got a call today from a homeowner (94 yrs old) wanting to know if she could have a receptacle installed for a window shaker. I get there and find the house has a 2 wire service with the utility meter on the kitchen wall and a fused knife switch next to it with 1 circuit running the entire home. The single circuit was #14 wire and fused at 30A.Everything was exposed and easily within touching distance. It was like stepping back in time, she said she had always remembered it being there from at least the early 20's. I did a load check and found 18A, that did not take into account the microwave, furnace, or wash machine that were currently not being used. I told her that the only thing I could do that would ensure safety would be to upgrade the service and rewire the house to minimum code.She replied I lived through 90+ years of heat a couple more won't matter. The kicker to the whole conversation was she could not remember ever changing a fuse since her father passed away in 1959.