I live in an old NYC apartment built in the 50s. I currently use a 1500-2000 watt portable AC unit and I feel the power cables are very hot during use. I'm afraid of the wires catching on fire in between the walls due to the old wiring.
I know the new cabling these days have the metal casing around the wires when you run it through the walls, but did they have this type of protection back then in the 50s also?
What is the rated max wattage for 110v wall outlet?