The other day I learned that if you do electrical wiring, you are responsible and liable for that installation as long as it exists.
Yikes! I guess this should give pause to someone like me who fancies himself to be a handyman, and is happy to do a small DIY project like replacing a receptacle with a GFCI receptacle. Or like the homeowner before me who added a shop light.
I always assumed selling the house relieved my liability! But it’s not. You are on the hook FOREVER!
Evidently if there is a fire, the investigators get up close and personal with stuff like those markings on the wire, and figure out who is responsible!
You can read more scary stuff here.