What is the minimum voltage rating for PFLA cables?

The minimum voltage rating for PFLA (Power Limited Fire Alarm) cables is established to ensure safety and reliability in fire alarm systems, particularly focusing on the ability to withstand environmental conditions and potential electrical interference. A voltage rating of 300 Volts is sufficient for most applications related to fire alarm signaling systems, as it is designed to mitigate the risk of hazardous situations, especially in terms of insulation reliability and system performance. This rating is in accordance with the standards outlined in the NFPA 72, providing a balance between safety and functionality for fire alarm installations.