When testing a boom on an energized circuit, how long should the testing intervals be?

The correct choice indicates that when testing a boom on an energized circuit, the appropriate testing interval is 1 minute. This duration is typically recommended to allow adequate time for the test equipment to stabilize and provide accurate readings without excessive delay. A 1-minute interval strikes a balance between ensuring thorough data collection and maintaining operational efficiency during testing.

Shorter intervals, like 30 seconds, might not give enough time for fluctuations in the circuit to be properly observed, potentially leading to misleading results. Longer intervals, such as 5 or 10 minutes, could unnecessarily prolong the testing process, which may not be practical in many situations where timely data is crucial for decision-making and safety assessments. By adhering to the 1-minute interval, technicians can effectively monitor the condition of the boom and the integrity of the energized circuit while ensuring safety and compliance with testing standards.