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The outside temperature in my area is just below freezing. Is it OK to go ahead and install copper cables?

February 4, 2020

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The outside temperature in my area is just below freezing. Is it OK to go ahead and install copper cables?

Whenever possible, install premises copper cabling at temperatures above freezing. The minimum recommended temperature for installing copper premises cables is -0º C (32º F). At lower temperatures the insulation and jacketing materials may stiffen, become brittle and crack. Wind chill must be considered.

Should it be necessary to install in temperatures below 32F, adhere to the following best practice guidelines.

  • Prior to installation, warm cables in a heated building a minimum of 24 – 48 hours.
  • Remove only the amount of cable which can be installed within 3 – 4 hours.
  • Return cables that were not installed within 4 hours to the heated building for “re-warming”.
  • To avoid cracking of the jacket, service coils should measure a minimum of 10 inches.
  • Avoid terminating cables until the building is enclosed (and heated).

Ignoring these “best practice” recommendations may result in stressing/cracking or kinking of the cable jacket, compromised electrical characteristics, and will void the manufacturers’ warranty.

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