Oklahoma Service Technician Practice Exam

The correct procedure emphasizes the importance of safety and preventing electrical hazards when working with electrical components. Ensuring that the power is turned off before working on electrical circuits is a fundamental practice in electrical safety. This step minimizes the risk of electric shock, injury, or even fatalities that can occur when working on energized components.

By interrupting the power supply, technicians can safely handle components without the threat of accidental electrical discharge. Furthermore, working on de-energized systems allows for thorough inspection and replacement of parts without fear of short circuits igniting or causing damage.

While wearing insulated gloves and goggles contributes to personal protective equipment, it is secondary to the critical step of de-energizing the circuit first. Testing voltage with a live circuit or handling components with bare hands significantly increases risk and should never be practiced. These actions are contrary to established safety protocols in electrical work. Thus, the priority must always be to ensure that power is completely turned off before any hands-on engagement with electrical components.