I'm looking to add a new receptacle for a TV. The nearest existing outlet is a new work metallic box nailed to the stud with barely room in the knockouts for a new piece of wire to go to new receptacle.
As luck would have it, the wire that feeds that existing receptacle runs right by where I want the new receptacle.
Can I cut the existing in-wall wire and make a splice with pigtails inside an old work receptacle box in order to add a new receptacle? If not, why not?
My concern would be insufficient length in the wire I cut, but the wires I put into the new receptacle would be pigtails so perhaps that's not an issue.
If this isn't an option, is the best practice to remove the existing new work metallic box with a plastic old work box, that would give me more room to add a piece of Romex going up to the new receptacle?
I can look to add photos but hopefully the description is sufficient. Location is Michigan, USA.