I have had pretty good luck with the brother labels wrapped in 2" clear packing tape on raceways and big cables. If you get the good 3M 355 clear tape it will last for many years. YMMV with cheaper no name tape from guys like U-Line.
Labeling cables under a computer room floor was always a challenge but an overwrap of that clear tape will put up with a lot of abuse.


Greg Fretwell