Wire Ferrules

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Wire Ferrules (sometimes cordend terminals , wire end sleeves) is a metal tube crimped over stranded wire to secure the strands within a screw terminal. Electrical insulation may be included to protect any exposed portion of the wire not completely inside the screw terminal post.

Stranded wire is preferred for most electrical applications because it is more reliable than solid wire. It is more flexible, and durable because repeated bending will not cause it to break. Stranded wire can be more difficult to terminate, because the individual strands tend to separate after insulation is removed.

By placing the end of the stranded wire in a ferrule, the strands stay together

wire ferrule is a copper plated tin tube that slides over the stripped end of a stranded wire. It is available in both insulated and non-insulated versions. The insulated wire ferrule contains a nylon extruded jacket intended to reduce signal leakage, creepage and reduce gas intrusion. The nylon jacks are color-coded by wire AWG (American Wire Gauge) or the Cross-Sectional Area of the conductor in millimeters squared (mm²). The color code will either follow the Industry Standard, which is commonly found throughout North America, or the DIN Standard (German Institute for Standardization) commonly found throughout Europe.

There are many benefits to using wire ferrules that far outweigh the minor cost per piece and additional labor and tools required to install them. Below is a list and explanation of the more common benefits, to help you make an educated and informed decision before using or omitting them.