I'm buying a house. The attic had a wire with frayed outer insulation. I negotiated repair of the cable. The seller has responded that the repairperson wrapped the fray with rubber electrical tape (I presume 3M tempex or a similar product). It has a continuous max temperature rating of 190 degrees farenheit. Attic temperatures here (Phoenix) reach the 180s during the summer. I have questionable faith in this repair. Is there anything in The National Electric Code that says this repair is improper?

  • Was this the outer jacket or the wire itself?
    – Machavity
    Mar 23 '19 at 17:25
  • Electrical tape is usually vinyl. Are we talking about something else?
    – isherwood
    Mar 23 '19 at 17:33
  • And what sort of cable? The only type that could really fray is old fabric cloth-covered cable.
    – isherwood
    Mar 23 '19 at 17:34
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    Yeah, the electrical code has a whole section of rules for electrical wiring operating in spaces with temperatures beyond norms. I see on the web where you got "180s" that's 82-87 degrees C and it's also anecdotal, and could be more. Mar 23 '19 at 18:27
  • 1
    @Joshua Please merge your guest and registered accounts, which will allow you to edit, comment on any of your posts and accept an answer on your question. Thanks, and welcome to the site!
    – Niall C.
    Mar 23 '19 at 20:34

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