A coworker sustained a high voltage shock during an installation and is unconscious. What is the first action to take?

In a situation where a coworker has sustained a high voltage shock and is unconscious, the first action that should be taken is to ensure the safety of the responder and the victim. Shutting off the power to the structure is critical because it eliminates the risk of further electrical injury to both the individual who was shocked and any rescuers attempting to help.

By securing the area and turning off the power source, the rescuer significantly reduces the danger of additional electrical shocks that could occur if the victim or rescuer were to come into contact with live wires or energized equipment. Once the power is off and it is confirmed that the area is safe, the responder can then check for a pulse, call for medical assistance, and if necessary, administer CPR. This sequence of actions prioritizes safety first, which is imperative in potentially life-threatening situations involving electrical hazards.