When I see a short wire, what can I do? There are close to ceiling junction boxes on top of the outlets where the wires come from, should I pull the short wire back into them and splice them with new long wires to extend them? Like with a twister on or wago connector?
Or should I try to rewire and replace the entire length of the wire coming from the apartments breaker? I'm tempted to try this because in one of the junction boxes I see black oily grime like char on the shielding of same wires, which leads me to think are somepoint something exploded in there.