What is the minimum voltage rating for a power limited fire alarm cable?

The minimum voltage rating for a power limited fire alarm cable is 300 volts. This rating ensures that the cable can handle the electrical conditions encountered in fire alarm systems without failing. Fire alarm cables are designed for low-power applications and must comply with National Fire Protection Association (NFPA) standards as well as National Electrical Code (NEC) requirements, which specify this voltage rating to ensure safety and reliability in fire protection systems.

This rating allows the cable to be used safely in various environments, meeting the necessary fire safety codes that help prevent malfunction and potential hazards in emergency situations. Understanding the minimum voltage rating is crucial for installers and technicians to select appropriate materials for their fire alarm systems, ensuring compliance and effectiveness.