What percentage of unaffected devices must be tested when a system is programmed for testing?

When a fire protection or alarm system is programmed for testing, it is established that a minimum of 10% of the unaffected devices must be tested. This percentage is crucial for ensuring the reliability and functionality of the entire system. Testing 10% of devices allows for an adequate representation of the overall system's performance without being overly intrusive or requiring the shutdown of many devices, which could impact safety.

The decision to test this percentage is based on industry standards and best practices that aim to balance thoroughness with practicality. It ensures that any potential issues can be identified while minimizing disruption to operations, thereby maintaining safety protocols. This approach supports compliance with regulations and reinforces confidence in the effectiveness of the fire protection measures in place.