You all have valid points, its certainly a worthwhile discussion.
Good question the only thing I can think of is chapter 8 gets a 'pass' on the rest of the code and is kinda its own code, where as if 725 applies the rest of the code does, also. 725 requires listing of the supplies, I am not sure chapter 8 does.But let's say that we concede that 725 covers data wiring. What difference would it make if it were covered by 800? What if anything is there in 725 relating to the installation and use of data wiring that's not also in 800? Is there any requirement in 800 that would prohibit or limit the installation or use of data wiring?