Originally Posted by
Mike Locurcio
The electricity doesn't know what color the wire is. The electrician does. Hence, the use of colored tape is a courtesy to the next guy. There should be a code violation for lack therof.
Except that some reidentifications are not required to be permanent and may use tape, some reidentifications are required to be permanent and tape is allowed, while other reidentification are required to be permanent and tape is not allowed. Tape is not "permanent".