Dealing with Electrical Fires Toolbox Talk

Electrical fires can start from overloaded circuits, damaged cords, faulty tools, temporary power, wet equipment, panels, batteries, generators, or overheated connections. These fires are especially dangerous because energized equipment can shock workers who try to fight the fire the wrong way.

This talk focuses on recognizing electrical fire warning signs, shutting off power when it can be done safely, using the right extinguisher, evacuating early, and keeping workers away until the hazard is controlled.

Why This Matters

• Water or the wrong extinguisher can make an energized electrical fire more dangerous.
• Smoke from burning insulation, plastic, batteries, and electrical components can be toxic.
• Panels, cords, tools, generators, and equipment may stay energized even when flames look small.
• Electrical fires can spread quickly through dust, trash, wood, insulation, packaging, and plastic sheeting.
• Re-energizing damaged equipment before inspection can restart the fire or expose workers to shock and arc flash.

Common Hazards

• Using water on an electrical fire before power has been shut off and verified.
• Trying to unplug burning or smoking equipment while standing in water or touching metal surfaces.
• Ignoring warning signs such as burning smells, hot plugs, buzzing panels, flickering lights, smoke, sparks, or repeated breaker trips.
• Blocked access to panels, disconnects, fire extinguishers, exits, or emergency routes.
• Combustible materials stored near panels, chargers, temporary power, generators, heaters, or cords.
• A cord, tool, charger, or temporary power box that stops smoking but remains hot or energized after the first problem appears.

Safety Checklist

Before Work Begins

• Identify panels, disconnects, generators, temporary power boxes, battery charging areas, and emergency shutdown points.
• Keep fire extinguishers rated for electrical fires accessible, inspected, and visible.
• Keep electrical panels, disconnects, exits, and walk paths clear of stored materials, trash, cords, and equipment.
• Inspect cords, plugs, tools, chargers, lights, generators, heaters, and temporary power for damage before use.
• Remove overloaded, damaged, hot, sparking, buzzing, or smoking electrical equipment from service.
• Review who will call emergency services, who will direct evacuation, and where the crew will meet.

During Work

• If smoke, sparks, flames, or burning smells appear, warn nearby workers and stop using the equipment.
• Shut off power only if it can be done safely without entering smoke, standing in water, or reaching into energized equipment.
• Use only the proper fire extinguisher for energized electrical equipment and only if trained to do so.
• Stay upwind of smoke and avoid breathing fumes from burning wires, plastics, batteries, or panels.
• Evacuate immediately if the fire grows, smoke spreads, power cannot be shut off, or the extinguisher is not controlling the fire.
• Do not reuse cords, tools, panels, chargers, generators, or equipment involved in a fire until inspected by a qualified person.

Crew Talking Points

• Where are the nearest electrical disconnects, panels, generators, and shutdown points?
• Where are the fire extinguishers rated for electrical fires?
• What equipment today could overheat, spark, overload, or create an electrical fire hazard?
• Are panels, exits, extinguishers, and emergency routes clear?
• Who will call emergency services and who will account for the crew if evacuation is needed?
• Speak up if you smell burning, see smoke or sparks, feel hot plugs, notice tripped breakers, or find damaged electrical equipment.

Stop Work If

• Smoke, sparks, flames, buzzing, burning smells, hot plugs, or overheated equipment are present.
• Power cannot be safely shut off or the electrical source is unknown.
• The correct fire extinguisher is missing, blocked, discharged, damaged, or workers are not trained to use it.
• Electrical panels, disconnects, exits, or evacuation routes are blocked.
• Water, mud, rain, or standing water is near energized equipment involved in the fire.
• Damaged electrical equipment has not been inspected and cleared by a qualified person before reuse.

Final Reminder

Do not take chances with electrical fires. Warn the crew, shut off power only if safe, use the right extinguisher if trained, and evacuate when the fire or electrical source is not controlled.