Before testing electric controllers, what shall the inspector do first?

• A. Disconnect the power to the controller.
• B. Have the necessary tools and safety equipment for the test.
• C. Perform a hazard risk assessment per NFPA 70E.
• D. Verify that volt/amp meter is operating properly

Answer: (C)

Electrical testing should begin with identifying hazards and planning protective measures under NFPA 70E. This hazard risk assessment is your first step because it reveals what electrical dangers exist, how severe they are, and what controls are needed to work safely. It determines whether the controller must be de-energized, what arc-rated PPE is required, what safe work practices to follow, and where boundaries or barriers should be set. Once the risk assessment is done, you implement the appropriate controls and proceed with testing. Acting on the assessment guides actions like de-energizing and selecting the right tools and PPE, rather than starting with those tasks in isolation. While disconnecting power, ensuring you have the proper tools and safety gear, and verifying test instruments are all important, they are derived from the hazard assessment and should follow it to ensure a safe operation.