When an outlet stops working, most normal people check the circuit breakers (or fuse box if their house is that old) before calling an electrician. Chris probably doesn't know where that is, or even what it is, and there's no way in hell the Chandlers would pay for an electrician (assuming they could even get one to show up). He and Barb apparently just started running increasing numbers of extension cords from an increasingly small number of remaining functional outlets until, well, fire put a stop to it (and Chris, of course, blamed the Keurig).