Is it mandatory for the property owner to be present during the key switch test?

The correct answer indicates that it is not mandatory for the property owner to be present during the key switch test. This is relevant in ensuring that operations can proceed without the requirement of involving the owner at all times, allowing for flexibility in scheduling and execution of tests without delays.

The procedures in place are designed for efficiency and functionality, recognizing that the presence of the property owner may not be crucial for the test to be conducted effectively. There may also be scenarios where the owner has other commitments, and requiring their presence might impede necessary safety checks or operational readiness.

In this context, the other options imply a necessity for the owner's presence or limit when they can be absent, which adds unnecessary constraints to the process. Therefore, the conclusion that it is not mandatory helps to streamline the process and ensures compliance with safety protocols without dependence on the property's owner.