Temporary Power and Extension Cord Hazards

Key Hazards

• Electrical shock from damaged cords or wet conditions
• Overloaded circuits causing overheating or fires
• Trip hazards and equipment damage from improper cord routing

2–3 Minute Talk Script

Temporary power and extension cord hazards are common on construction sites, utility projects, municipal operations, maintenance activities, and temporary work areas. Damaged cords, overloaded circuits, and poor electrical setups can quickly create shock, fire, or trip hazards.

Different workplaces create different temporary power challenges. Construction crews often run cords across active job sites, utility workers may operate portable equipment outdoors in wet conditions, and maintenance teams frequently rely on temporary power during repairs or shutdowns.

Workers should inspect extension cords before use and remove damaged cords from service immediately. Cracked insulation, exposed wiring, damaged plugs, missing grounding prongs, or taped repairs increase the risk of electrical shock and equipment failure.

Overloading circuits is another common hazard. Running multiple high-demand tools or heaters from a single extension cord can cause overheating, voltage drop, or fire. Workers should use properly rated cords and avoid daisy-chaining multiple cords or power strips together.

Temporary power setups should also account for environmental conditions. Water, mud, snow, sharp edges, vehicle traffic, and foot traffic all increase the likelihood of cord damage or accidental contact. Ground fault circuit interrupters, or GFCIs, should be used whenever required, especially in wet or outdoor locations.

Cord routing is important for both electrical safety and housekeeping. Cords stretched across walkways or roadways create trip hazards and may become crushed or damaged by equipment or vehicles. Workers should secure cords properly and protect them from traffic whenever possible.

Workers should disconnect temporary power safely before servicing equipment or replacing damaged cords. Improvised electrical repairs should never be used in active operations.

Safety Reminders

• Inspect extension cords before use.
• Remove damaged cords from service immediately.
• Avoid overloading circuits or daisy-chaining cords.
• Use GFCI protection in wet or outdoor environments.
• Route cords to reduce trip hazards and equipment damage.

Ask the Crew

• Are temporary power setups inspected regularly?
• Do any cords show signs of wear, damage, or overheating?
• Are cords routed safely away from traffic and sharp edges?
• Are GFCIs being used where required?