What must all lines and equipment be considered unless they are tested, grounded, de-energized, tagged, or positively identified?

In the context of electrical safety for linemen and electricians, all lines and equipment that have not been confirmed as tested, grounded, de-energized, tagged, or positively identified must be treated as energized. This is a critical safety guideline because assuming that equipment is safe when it has not undergone proper verification can lead to severe accidents, injuries, or fatalities.

The term "energized" refers to electrical lines or equipment that carry voltage and can pose a risk of electrical shock or arc flash. By recognizing untested or unverifiable equipment as energized, workers are reminded to take all necessary precautions, such as wearing personal protective equipment and implementing safe work practices. This helps in preventing dangerous situations that could arise from inadvertent contact with live equipment.