Twist-on wire connector

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Twist-on wire connectors are a type of electrical connector used to fasten two or more low-voltage (or extra-low-voltage) electrical conductors. They are widely used in North America in residential, commercial and industrial building power wiring, but are distrusted in some countries, due to early porcelain versions breaking apart, exposing bare conductors. In most european countries, they are not certified for use. Twist-on connectors are also known as wire nuts, wire connectors, cone connectors, or thimble connectors. In Canada, the trade name Marrette (see § History) is commonly used generically for connectors of any brand.

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