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 and several European countries in residential, commercial and industrial building power wiring, but have been banned in some other jurisdictions.[citation needed][dubious – discuss]
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.