What is a primary hazard when performing insulation testing?

• A. Fire
• B. Electric shock
• C. Noise
• D. Chemical exposure

Answer: (B)

Insulation testing uses high voltage to check the integrity of insulation, so the main danger to the person conducting the test is electric shock. If a tester touches a live conductor, test lead, or a component that is charged, a dangerous current can pass through the body. Even when power is off, stored energy in capacitors or in the circuit can discharge suddenly if not properly discharged, creating a shock risk. To stay safe, follow proper procedures: ensure the equipment is de-energized and grounded, discharge any stored energy, use well-insulated tools and PPE, and keep hands away from live parts.

While fire or chemical exposure can be concerns in some scenarios, they are not the immediate risk to the tester during insulation testing as electric shock is. Noise isn’t a typical hazard in this context.