Extension Cord/Power Strip

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Extension Cord/Power Strip

Extension cords and power strips have the potential to cause fires, electrical shock, loss of power to equipment, and facility damage.

For More Information

  • Technical Support: EHS at (734) 647-1143
  • Adding New Outlets: Facilities Maintenance at (734) 647-2059
  • Electrical Hazards
extension_cord

Use of extension cords at University of Michigan (U-M) is restricted to only providing temporary power for portable equipment (e.g., maintenance, cleaning, audio-visual, or construction activities).  If an extension cord is used, U-M policy states the extension cord must be:

  • Certified by a nationally recognized laboratory (UL, CSA, ITSNA)
  • Used only in continuous lengths without splice or tape

Before using an extension cord:

  • Inspect it and remove it from service if it is damaged
  • Verify it is suitable for the use and location of the equipment

Restrictions to Extension Cord Use

Extension cords cannot be:

  • Connected in series to another cord or power strip (daisy-chain, piggy-back)
  • Continually connected to an outlet for more than 1 work day
  • Used with equipment drawing more than 15 amp
  • Used as a substitute for fixed wiring of a structure
  • Attached to building surfaces
  • Concealed by walls, floors, or ceilings or located above suspended or dropped ceilings
  • Installed in raceways, except when permitted by Code
  • Run through:
    • Holes in walls, ceilings, or floors
    • Doorways, windows, or similar openings
  • Placed where it is subject to physical damage
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