Furthering to try and sort this out...
As the Low Voltage rules would or would not apply under 725.x for Class 2 and Class 3 signal wires or 800.x for Communications (all subject to circuit rating determination)...
It appears an exception would be if "Class 1 wiring methods" were employed under 725.25 and subsequent sections.
The question that would arise is under 725.27 (A) calling for 18 AWG and 16 AWG as "shall be permitted" to be used... and under 725.27(B) calling for "shall be suitable for 600 volts"...
Any ideas where shielded 24 AWG twisted pair conductors rated to 300 volts might fit in with the examples above?
