electrical wiring 8.56   Proper electrical wiring.
  faulty wiring 4.74   Faulty wiring is suspected.
  copper wiring 0.72   Most manufactured good use copper wiring and tubing.
  damaged wiring 0.53   Damaged wiring was found in all four shuttles.
  electric wiring 0.53   A boiler ripped from the building, electric wiring, pipes, air ducts.
  new wiring 0.53   New wiring was being set up further north.
  old wiring 0.46   Old wiring could be the cause as well.
  internal wiring 0.39   The build-up of ice on roofs is also creating leaks that threaten internal wiring and pose a fire hazard.
  exposed wiring 0.33   -- Exposed wiring gets cracked or damaged by the sun, pets or other forms of wear.
  household wiring 0.33   This is less time than it takes the electricity to travel through standard household wiring.
  inadequate wiring 0.33   The lowest stack, however, had inadequate wiring to hold it together.
  aging wiring 0.26   A short circuit in the aging wiring likely started a fire that set off the explosion, Potesta said.
  frayed wiring 0.26   Frayed wiring was blamed for triggering warning lights.
  high-speed wiring 0.26   But even with state-of-the-art equipment and high-speed wiring, the school has yet to incorporate the Internet into its curriculum.
  home wiring 0.26   The fields are ubiquitous forms of radiation that arise from all power lines, home wiring and computers.
  shoddy wiring 0.26   Shoddy wiring may have caused the blaze.
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