MC cable, or metal-clad cable, is a commonly used armored electrical cable with a protective metal sheath. Stripping MC cable properly is crucial for safe, code-compliant installations—but many DIYers and even pros damage the wires inside if they don't use the right method.
This guide walks you through the best way to strip MC cable cleanly, with or without a specialty tool, and how to avoid common mistakes.
🔍 What Is MC Cable?
MC (Metal-Clad) cable consists of:
An interlocked aluminum or steel armor as an outer layer
One or more insulated conductors inside (THHN wires)
A green ground wire
Sometimes a paper or plastic wrap for internal structure
⚠️ Important: MC cable is different from BX or AC cable. MC has a separate ground wire; AC uses the armor as ground.
🧰 Tools You’ll Need
✅ Best Tool (Recommended)
MC Cable Cutter / Roto-Split Tool – Cuts and scores the armor without damaging the conductors.
✅ Alternative (DIY)
Hacksaw or rotary tool (Dremel)
Side-cutting pliers
Utility knife (for internal wraps)
Metal file
Red anti-short bushings (required by code)
✂️ How to Strip MC Cable (Using a Roto-Split Tool)
Step 1: Measure and Mark
Measure the length you need to strip (usually 6–12 inches depending on box depth).
Mark the armor with a Sharpie or masking tape.
Step 2: Score the Armor
Insert the cable into the Roto-Split until the blade lines up with your mark.
Clamp down and rotate the handle 3–5 times to score the armor.
Step 3: Bend and Snap
Remove the cable and bend it slightly at the score mark.
The metal armor will crack open along the score line.
Step 4: Twist Off the Sheath
Use pliers to gently twist and pull off the loose armor section.
Step 5: Install Anti-Short Bushing
Insert a red anti-short bushing where the armor ends to prevent sharp metal from damaging the wire insulation.
Step 6: Trim Insulated Conductors
Cut each wire to the proper length using wire strippers.
🔧 How to Strip MC Cable Without a Roto-Split Tool
Don’t have a dedicated MC cutter? You can still do it manually—carefully.
1. Score the Armor with a Hacksaw or Rotary Tool
Use a fine-tooth hacksaw or Dremel to score the armor—don't cut too deep.
Be cautious not to nick the insulation.
2. Snap & Remove the Sheath
Bend the cable at the score and twist off the armor using pliers.
3. Insert a Bushing
Use a red bushing at the armor end to protect the conductors.
4. Strip the Conductors
Use a wire stripper to remove insulation from the THHN wires inside.
🔥 Pro Tip: Always check that the armor edge is smooth. Use a metal file if necessary.
🛠️ Common Mistakes to Avoid
Cutting too deep: Easily damages the wire insulation
Skipping the bushing: Can lead to insulation abrasion and shorts
Not deburring the armor: Leaves sharp edges inside the connector
Using the wrong tool (e.g. cable cutters): May flatten or crush the cable
🧠 FAQ
Q: Do I always need a bushing inside MC cable connectors?
A: Yes—per NEC code, anti-short bushings are required to prevent the metal armor from cutting the wire insulation.
Q: Can I use a Dremel instead of a Roto-Split?
A: Yes, but it’s harder to control and easier to over-cut. Use with care and always wear safety glasses.
Q: What if I nick a wire while stripping?
A: Cut the cable back and start over. Damaged insulation is a safety hazard.
✅ Conclusion
Stripping MC cable is simple when you have the right tools and follow a careful process. Whether you're using a Roto-Split tool or a manual method, the keys to success are precision, safety, and using anti-short bushings to protect your conductors.
Ready to work with MC cable like a pro? Make sure your toolbox includes a proper MC cutter and bushings. It's a small investment for safer, faster installations.
