Pokin' around the NFPA site, and stumbled across this, if anyone's work falls under 645:
http://www.nfpa.org/assets/files/PDF/CodesStandards/TIAErrataFI/TIA70-08-1.pdf
http://www.nfpa.org/assets/files/PDF/CodesStandards/TIAErrataFI/TIA70-08-1.pdf