Randy Jones said:
Prohibit running low voltage (12-24v) and 120v wiring in the same boxes and
conduit? If so, can you please cite the section?
Low voltage (12-24v.) is an ambiguous term when applying the NEC. Circuits
that you may be referring to are either Class 1, Class 2, Class 3, or Motor
Control circuits. Class 2 circuits must be supplied by a power supply
labeled Class 2 that is generally limited to 100 Volt-Amperes and 30 volts
maximum (see Table 11A and 11B in Chapter 9 of the NEC). These circuits
cannot be run in the same raceway as power circuits or Class 1 circuits.
They can be run into a box or cabinet with power when supplying common
equipment if .25 inches of separation is maintained and can be run in
gutters and boxes with power if properly installed with separation barriers.
Section 725.55 delineates more rules.
