During an electrical fire, which action is recommended if feasible?

• A. Do not shut off power because energizing could occur.
• B. Shut off power if feasible by authority.
• C. Break the circuit with metal tools.
• D. Only use water to extinguish.

Answer: (B)

When an electrical fire occurs, the first goal is to remove the energy source. If it’s safe and feasible, shutting off the power at the main disconnect or by the authority eliminates live current, which greatly reduces the risk of electric shock, arc flash, and re-ignition as the fire is being fought or evacuations are underway. This makes it safer for everyone and for firefighters trying to suppress the flames.

Leaving power on keeps the circuit live, which can energize metal tools and water and create dangerous paths for electricity to travel. Breaking the circuit with metal tools is hazardous because a grounded or energized conductor can easily shock or injure you. Water conducts electricity, so using it on a live electrical fire can put people at serious risk. With power shut off by the appropriate person, other suppression actions become safer and more effective.

So, shut off power if feasible by an authorized person to remove the energy source and reduce risk.