What action should not occur while inspecting the electrical firing unit?

During the inspection of the electrical firing unit, it is vital to ensure that all aspects of functionality and safety are thoroughly assessed. While actions like verifying connections, assessing the safety of the device, and checking for visual damage are essential and promote a safe operating environment, conducting a test of the firing sequence is not advisable at this stage.

Testing the firing sequence implies activating the system, which could lead to a premature firing of the fireworks. This testing should only occur when the display is being prepared for its actual performance, in a controlled environment, and not during the inspection phase. Thus, the focus of the inspection should be on ensuring that the systems are intact, safe, and functional without initiating any actions that could result in an unintended discharge.