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Low Voltage Controllers
Q. When wiring a low-voltage controller with a single switch, with no
other conductors or circuits in the control box, can both low voltage
and line voltage be in the same box? The controlled circuits are 120 volts,
the control wiring is Class 2 or 3 remote-control wiring rated for the
available voltage in the enclosure, and the low voltage wires are rated
300 volts. The actual voltage of the system does not exceed 120 volts.
Yes. Refer to (NEC) Articles 300.3(C)(1), 725.54, and 725.55. (May 1,
2003 Tri-County Code Forum; approved by state electrical code chief for
statewide application))
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