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Home › Resources For You › House Facts › Basic Components and Systems of the Home › Electrical › Common Defects

Common Defects

  1. Aluminum single conductor wiring on 120-volt circuits
  2. Broken fixtures or devices
  3. Loose or inoperative ceiling fans
  4. Double tapped circuits in service or distribution panels
  5. Permanently installed extension cords or temporary wiring
  6. Frayed, deteriorated or melted insulation
  7. Missing or inoperative GFCIs
  8. Grounds loose, wire connections/clamps corroded or not properly connected
  9. Improper junctions or splices
  10. Improper main disconnect
  11. Improper exterior wiring
  12. Loose outlets and switches
  13. Knob and tube wiring (age and condition concerns)
  14. Lights not functional
  15. Missing cover plates
  16. Outlets with open grounds
  17. Inadequate overhead cable clearances
  18. Oversized breakers or fuses
  19. Inoperative smoke detectors
  20. Reversed polarity at outlets
  21. Unsecured or inadequately secured electrical cables
  22. Subpanel grounds and neutrals not separated
  23. Missing knock out in panel/boxes
  24. Bath lights on GFCI circuit
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