Electrical

Electrical Wire Stripping: Proper Techniques

May 17, 2025
Electrical Team
4 min read
Electrical Wire Stripping: Proper Techniques

A solid, secure electrical connection starts with a clean, properly stripped wire. Wire stripping is the process of removing the outer layer of plastic insulation to expose the copper conductor underneath. While it seems like a simple task, doing it incorrectly can lead to poor connections, overheating, and potential hazards. Mastering the right technique is a fundamental electrical skill.

🛠️ The Right Tool for the Job

Using the correct tool is essential for a clean strip.

Always use a dedicated wire stripper tool. Do not use a utility knife, scissors, or pliers. These tools can easily nick or cut the copper wire, creating a weak spot that can overheat or break off.

A good wire stripper has a series of precisely sized holes for different wire gauges (e.g., 14, 12, 10 AWG). Using the correct hole ensures you only cut through the insulation.

🔧 How to Strip a Wire Correctly

Follow these steps for a perfect strip every time.

1
Determine the Strip Length: Look for the "strip gauge" on the back of the outlet or switch you are wiring. This shows you exactly how much insulation to remove, usually about 3/4 of an inch.
2
Select the Correct Hole: Identify the gauge of your wire (e.g., 12 AWG for a 20-amp circuit) and place the wire in the corresponding hole on your stripper.
3
Clamp and Twist: Close the stripper handles firmly to cut through the insulation. Give the tool a slight twist around the wire to ensure a clean cut.
4
Pull Off the Insulation: Pull the stripper toward the end of the wire to slide the cut piece of insulation off, revealing the clean copper conductor.

✅ Inspecting Your Work

After stripping, take a second to inspect the wire.

🔍
The exposed copper should be clean and straight.
🚫
There should be no nicks, cuts, or scrapes on the copper conductor. If you see damage, cut the wire and strip it again.

Proper wire stripping is the foundation of every safe electrical connection. For projects that go beyond basic techniques, the professional electricians at The Box Advantage Group have the skills and tools to ensure every connection in your home is safe, secure, and built to last.

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