Although different manufacturers offer different versions of the tools, the wire stripping process is essentially the same for each tool. This is the process for standard or combined tools:
1. Determine wire gauge and type
Determine the gauge of copper wire to be stripped. You can find it on the outermost sheath that binds multiple wires together within NM cable (non-metallic sheathed cable). For example, with a number like 12/2, the first number is the wire gauge (12 in this case). Also, note whether the wire is solid copper or stranded copper.
2. Determine wire gauge and type
Determine the gauge of copper wire to be stripped. You can find it on the outermost sheath that binds multiple wires together within NM cable (non-metallic sheathed cable). For example, with a number like 12/2, the first number is the wire gauge (12 in this case). Also, note whether the wire is solid copper or stranded copper.
3. Open the wire stripper and place the wire
Open the wire stripper handle. "Pin" the wire to the side of the correct hole. Slowly press the handles together until they can no longer move. This action will cut through the insulation on the wire.
4. Twist tool (if needed)
If the wire insulation is not completely cut, you may need to gently rotate the wire inside the hole (or rotate the stripper around the wire, whichever is easier). You don't have to turn too far: just a quarter turn in one direction and back.
5. Peel off the insulation
Pull the wire strippers toward the cut end of the wire to remove the insulation. This action is like pulling a sock off your foot. Some users find it easiest to push the tool with the thumb of the hand holding the wire while holding the tool's handle firmly with the other hand.