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Crimping Ferrules onto Stranded Wire

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1:59
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Master Electrician Teaches Son 2 ways how to Connect Stranded THHN wire to any Device, Thoughts?

What happens here

To apply a ferrule, first, strip the appropriate length of insulation from the stranded wire, ensuring the bare wire length matches the metal tube of the ferrule. Slide the ferrule over the exposed wire strands until the insulation meets the ferrule's plastic collar (if present). Then, use a specialized crimping tool, such as the 'Knipex 97 53 04' model shown, which creates a square crimp. Place the ferrule and wire into the correct size slot on the crimping tool and squeeze the handles firmly to compress the ferrule onto the wire. It's crucial not to use lineman's pliers for this, as they will create an incorrect, often circular, crimp that doesn't properly secure all wire strands. The goal is to achieve a neat, square crimp that perfectly encloses all strands.

Goal: Securely attach a ferrule to stranded wire using a specialty crimping tool.

Tools and materials

  • Ferrule — The terminal component to be crimped onto the wire
  • Specialty Crimping Tool Knipex — Crimping the ferrule onto the stranded wire to create a square termination
  • Stranded THHN Wire — The wire to be terminated with a ferrule
  • Wire Strippers — Removing insulation from the wire

What they say

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you'll always see ferrules on there. So, this just slips over the end of the wire. >> ferrule And then you use a tool like this. This is a specialty crimping tool. Okay. Nowadays with Amazon, everything is inexpensive. So, you could just put your ferrule on here and crimp it. Can I use my lineman's tool? No, you don't want to use your lineman's on a ferrule tool. Okay. You need that square Look at that beautiful crimp. You need that square crimp like that. >> And you put that on the terminal. Correct, you put that on the terminal.

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