The ground wire is uninsulated and does not need to be stripped. Repeat for each set of wires you're splicing. Hold the bare copper ground wires with one hand, and line up the ends so they're even.

Then strip back the sheathing 2 in. and the wire insulation 5/8 in. Use two special underground splice kits (sold at home centers) to connect the new cable section. Slide the heat shrink tube over ...

Attaching a connector to an optical fiber takes more work than copper wire connectors (note the several ... See mechanical splice and fusion splice. THIS DEFINITION IS FOR PERSONAL USE ONLY.