How to splice an underground telephone cable

Written by david lipscomb Google
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How to splice an underground telephone cable
Splice an underground phone line to restore a good connection. (Hemera Technologies/ Images)

Underground telephone lines are installed there for protection. Over time, though, they may still develop flaws from cold/thaw cycles or curious animals. Such flaws typically cause moisture intrusion, necessitating a new wire splice integrated into the "good" wire that remains. The key with any underground wire splice is ensuring that the resulting connection remains watertight.

Skill level:

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Things you need

  • Shovel
  • Wire cutters
  • New telephone wire
  • Wire strippers
  • Waterproof gel-filled crimp splices
  • Heavy-duty pliers

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  1. 1

    Call (888) 258-0808 to reach your local One-Call centre to determine the location of the phone line and other utilities.

  2. 2

    Dig around the wire location, exposing the broken or damaged portion of the phone line.

  3. 3

    Cut one inch before and after the break or cut with wire cutters, creating fresh wire ends.

  4. 4

    Cut a new piece of phone line, long enough to span the removed section without strain.

  5. 5

    Strip one inch of outer insulation from all exposed ends of the existing and new wires.

  6. 6

    Push the individual wire pairs on one end of the existing wire into the small receiving tubes on the gel-filled connector. Push the wires from one end of the new wire splice into the other end.

  7. 7

    Compress the round centre plastic compression piece in the middle of the connector, using heavy-duty pliers. Repeat the process for the other end of the splice. This pushes into the wires' insulation, releasing the waterproof gel over the electrical connections inside the connector.

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