A qualified individual understands that all conductors must be what?

The concept that all conductors must be considered energized until proven to be otherwise is critical for safety in electrical work. This principle emphasizes the importance of treating every conductor as if it carries live current until proper verification confirms that it is safe to handle. This cautious approach helps prevent serious accidents and injuries that could occur from unexpected electrical shocks.

A qualified individual, often defined by training and experience, is aware that electrical systems can be unpredictable and that a lack of visible signs of danger does not guarantee safety. Hence, using testing equipment to confirm the absence of voltage is essential before touching or working on any conductor.

While grounding conductors, testing for continuity, or verifying voltage are significant safety measures, the overarching principle of considering conductors energized until verification of their status forms the foundation of safe electrical practices. This mindset instills a habit of caution and thoroughness, which is vital in the field of electrical work.