Which aspect is essential for the proper installation of emergency systems?

The essential aspect for the proper installation of emergency systems is periodic witnessing by officials after installation. This process ensures that the system is functioning correctly and meets the necessary codes and standards required for safety and reliability. Witnessing involves having qualified inspectors or officials observe the testing of the system to verify its operational readiness and compliance. This external validation is crucial, as it helps identify any potential issues that may not be caught by the installation team alone.

While regular manual testing and reliance on user self-testing can contribute to ongoing system maintenance and operation, they do not replace the formal verification process conducted by external officials. Additionally, the installation experience of workers is significant; however, it does not guarantee compliance with regulatory standards or the thoroughness of testing necessary for emergency systems. Consistent oversight by officials post-installation ensures a higher level of accountability and improves the overall integrity of the emergency system.