Static field route #19648

What do I do when an extension cord has damaged insulation?

Field Basics, Safety & Access🚫 STOP / GET DIRECTIONField answer expansion

📖 Verified core answer

Pull damaged cords out of service before running high-load tools. Tag the cord and get a safe lead instead of gambling with shock or fire.

Open in Field Rescue Open category

Field verification checklist

Inspect the full cord jacket before use.
Look for exposed copper, crushed spots, burns, or loose ends.
Remove damaged cords from service and tag them.
Keep cords out of wet areas and lift paths.
Use the right cord/gauge for the tool and site rules.

Ask foreman

That cord has an open nick exposing the wires. Pull it out of service right now and tag it out. We don't run heavy tools on compromised leads—that's an automatic electrical hazard.

Text to foreman

Route options

A Correct prep/setup only if the fix is within your assignment and the approved method is clear.

B Hold and document if it affects safety, structural support, rated assemblies, airflow, access, tools, material condition, or another trade.

C Bring the journeyman/foreman the location, what you checked, and what decision you need before the crew loses time.

Do not do this

Do not run plasma cutters, drills, or grinders on nicked or exposed cords.

Why this matters

Bad cords can shock workers, trip breakers, or start fires.

Final verification

Use this as field training guidance. Final direction still comes from the foreman, approved drawings, project specs, manufacturer installation instructions, employer safety policy, pressure/material schedule, and AHJ/code requirements.

Search helpers: extension cord nick insulation tag out plasma cutter power safety helper