Removing the plastic sheathing from electric wire is a common task in electrical work and can be done safely and effectively using the right tools and techniques. One method involves carefully using a utility knife, as well as other tools designed specifically for stripping wire.
Using a Utility Knife to Strip Wire
The utility knife method is suitable when you need to strip a segment of wire, especially larger gauge wires or cables. Crucially, use extreme caution to avoid cutting the wire strands inside or injuring yourself.
Based on the provided reference, here's how to use a utility knife:
- Apply Very Light Pressure: When cutting the plastic, don't cut all the way through the plastic sheathing. You only need to score or cut just through the outer layer.
- Keep a Finger Opposite: For control and safety, keep your finger on the opposite side of the cable from where you are cutting. This helps you feel the pressure and prevent cutting too deep.
- Score the Sheathing: Make a shallow cut around the circumference of the cable where you want the plastic to end, or make a longitudinal cut along the cable's length.
- Bend and Break: Once scored, bend and break the sheathing. This technique helps the scored plastic sheath separate along your cut line.
- Slide it Off: With the sheathing separated, you can now slide it off the wire conductors inside.
Safety First!
When using a utility knife:
- Always cut away from your body.
- Ensure the blade is sharp for a clean cut that requires less pressure.
- Wear work gloves for added protection.
Other Common Tools for Stripping Wire
While a utility knife can work, dedicated wire stripping tools are often safer and more efficient, especially for smaller wires.
- Manual Wire Strippers: These have notched jaws for different wire gauges. You select the notch matching your wire size, insert the wire, squeeze the handles, and pull. This cuts the plastic sheath cleanly without damaging the wire.
- Automatic Wire Strippers: These tools automatically grip the wire, cut the insulation to a set depth, and pull the insulation off in one motion. They are very fast and easy to use.
- Cable Strippers: For larger cables, specific cable stripping tools score the outer jacket circumferentially and/or longitudinally, allowing you to easily remove it.
| Tool Type | Best For | Ease of Use | Safety Level |
|---|---|---|---|
| Utility Knife | Larger cables, general use | Moderate | Requires Care |
| Manual Wire Strippers | Various wire gauges | Easy | High |
| Automatic Strippers | Repetitive tasks, speed | Very Easy | High |
| Cable Strippers | Large diameter cables | Easy | High |
Choosing the right tool depends on the type and size of the wire, as well as the frequency of the task. For occasional use on larger cables, a utility knife with caution can suffice, but for regular work or smaller wires, investing in dedicated strippers is recommended.
