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Mine Type: All Mines Category:   Electrical
Mine Safety and Health Administration
MSHA's Accident Prevention Program
Miner's Tip

"Electrical Extension Cords"

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Safety and Health are Values!


Electrical extension cords can be a source of fires and electrical shock when misused at the mine or at home.

Best Practices
    Electrical Extension Cords
  • Use extension cords only when necessary and only on a temporary basis.


  • Replace cracked or worn extension cords.


  • Insert cord plugs fully so that no part of the prongs are exposed.


  • When disconnecting cords, pull the plug, not the cord.


  • Use only three-wire extension cords for tools with three-prong plugs. Never remove the third (round or U-shaped) prong. It is a safety feature designed to reduce the risk of shock or electrocution.


  • If the body of the cord or the plug feels hot or if there is a softening of the plastic, it is a warning that the plug wires are failing. Do not use the extension cord.


  • Do not use an extension cord while it is coiled or looped, and never cover any part of an extension cord with rugs while the cord is in use.


  • Using nails or staples to attach extension cords to a wall or ceiling could damage the cord and present a shock or fire hazard.


  • Don't plug in tools that exceed the rating of the cord.


  • When using outdoor tools and appliances, only use extension cords labeled for outdoor use.


  • Avoid plugging multiple extension cords together. This can lead to overheating.


Issued: 09/23/2002
Tag # AP2003-M097


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