Mixing class one and non-ability-minimal fire alarm circuits shall be permitted to occupy exactly the same cables, enclosure, or raceway without having regard to When the voltage is alternating or immediate current, providing the conductors are insulated for the utmost voltage of any conductor while in the raceway or enclosure. https://fire-alarm-system-integra56778.blogoscience.com/33094918/fire-alarm-safety-for-dummies