Guys:
Just a quick note.
Came across a "homeowner special" last week with my AHJ hat on...
Finished basement, no permits at original job; owner selling house; needed to get a permit and inspection. Had the H/O pull all the plates and devices to "see" the wiring. Damn if this guy didn't backstab #12 (NMC), and to top it off, he managed to backstab #12 THHN stranded from some wiremold runs. Couldn't take a pic, but it was close to TG's fry job.
TG: I hope you get the drift; a "bad" or questionable termination/connection WILL eventually show it's face. DEpendent on the load, and the duty cycle, it may be real soon, or a long time.
IMHO, If the area was being renovated, and the original cable passed muster, then it could be re-used. It must be properly protected by a CB. There are opinions as to doing this, but the "rehab" code in NJ allows it, to an extent. It is not a "standard" practice with most ECs to re-use old cable; most times in a kitchen reno, the "old" is #14, and the "new" has to be #12.
A penny saved sometimes, can lead to many dollars spent in the future.
I'm gettin of my soap box, and back to work.
John