How to Crimp Ferrules (and Why You Need Them)
March 29, 2020 · 2 min · 205K views
What this video covers
Wire ferrules prevent electrical shorts by bundling stranded wire ends before insertion into screw-down terminals, such as those found on charge controllers.0:46 Without a ferrule, stray wire strands can bridge neighboring terminals, creating a fire hazard or melting plastic enclosures.0:57 Installing a ferrule requires stripping the wire insulation to the length of the metal tube, inserting the strands, and using a dedicated ferrule crimper to compress the tube until the tool releases.1:38 Nate uses a crimper compatible with 6 to 12 gauge wire for this process.1:32 Adding a small piece of heat shrink over the junction between the ferrule and the wire insulation provides additional mechanical support and a finished appearance.1:58 While ferrules are mandatory for certain electrical inspections in Europe, they remain optional in the United States.1:13 Proper ferrule sizing must match the wire gauge to ensure a secure connection.1:28
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