Voltage ratings for power-limited fire alarm circuit conductors must be rated to __________.

Question

Quizplus · Accepted Answer

Power-limited fire alarm circuit conductors must be rated to at least 300V according to the National Electric Code (NEC). This is because these circuits carry low voltage signals but are often in close proximity to higher voltage electrical systems, and a higher voltage rating is required to maintain electrical isolation and prevent arcing or short circuits.

Voltage Ratings for Power-Limited Fire Alarm Circuit Conductors Must Be