Está tudo bem desde que os fios para a chave de controle do ventilador sejam tratados como fios de 120VCA conforme 725.46:
Class 1 Circuit Wiring Methods. Class I circuits shall be installed in accordance with Part I of Article 300 and with the wiring methods from the appropriate articles in Chapter 3.
(ou seja, executado usando NM e não cabo / fio do tipo de comunicação) e conforme 725.48 (B) (1):
(B) Class 1 Circuits with Power-Supply Circuits. Class 1 circuits shall be permitted to be installed with power-supply conductors as specified in 725.48(B)(1) through (B)(4).
(1) In a Cable, Enclosure, or Raceway. Class 1 circuits and power-supply circuits shall be permitted to occupy the same cable, enclosure, or raceway only where the equipment powered is functionally associated.
desde que os fios de controle estejam com os fios de energia do ventilador, e nós podemos seguramente tratá-los como um circuito de controle Classe 1 usando as provisões de 725.130, Exceção 2:
Exception No.2: Class 2 and Class 3 circuits shall be permitted to be reclassified and installed as Class 1 circuits if the Class 2 and Class 3 markings required in 725.124 are eliminated and the entire circuit is installed using the wiring methods and materials in accordance with Part II, Class 1 circuits.