![]() ![]() Twist-on wire connectors are commonly color-coded to indicate the connector size and, hence, their capacity. Such extensions also allow these connectors to be installed with a common nut driver or a specialized tool. Winglike extensions are commonly molded into higher quality connectors to reduce operator muscle fatigue when installing a large number of the connectors. They may have external grooves to make them easier to handle and apply. Twist-on wire connectors are typically installed by hand. Electrical continuity is maintained both by the direct twisted wire-to-wire contact and by contact with the metal insert. When such a connector is twisted onto the stripped ends of wires, the wires are drawn into the connector's metal insert and squeezed together inside it. While their exterior covering is typically made from insulating plastic, their means of connection is a tapered coiled metal insert, which threads onto the wires and holds them securely. Twist-on wire connectors are available in a variety of sizes and shapes. One trade name for such connectors, Marrette, is derived from the name of their inventor ( see History) and, in Canada, this type of connector is often referred to as a marrette regardless of the actual brand of the product. Twist-on connectors are also known as wire nuts, wire connectors, cone connectors, or thimble connectors. 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. ![]() Twist-on wire connectors are a type of electrical connector used to fasten two or more low-voltage (or extra-low-voltage) electrical conductors. JSTOR ( January 2020) ( Learn how and when to remove this template message)Įnd view showing metal inserts Twist-on connectors used in a junction box Twist-on wire connectors.Please improve this article by adding secondary or tertiary sources.įind sources: "Twist-on wire connector" – news Not for use in continual submersion applications.This article relies excessively on references to primary sources. Yellow MudBug® Utility Wire Connectors off the same moisture and corrosion resistant properties as the UnderGround connectors but are designed for utility tracer line applications.ĭue to the pre-filled silicone sealant, UnderGround and MudBug® Utility Wire Connectors are designed as a one-use only connection. The tough, thermoplastic shell provides extra protection against accidental impacts and the deep skirt provides superior moisture resistance, making these connectors UL Listed to 486G for use in damp, wet or direct burial, below-grade applications. With an expanding, live-action spring and pre-filled with a silicone-based sealant, UnderGround Wire Connectors make fast, secure, and long lasting connections. Quick and easy application saves time and energy, eliminating the need for heat shrink, resin-packs, and multi-step corrosion kits. UnderGround Wire Connectors are designed to secure and protect wire connections in a wide variety of below-grade, wet location and direct burial applications. The connector made specifically for harsh underground environments. For use in damp/wet location or direct burial-grade applications.Tough, UL 94V-2 flame-retardant shell rated at 105☌ (221☏).Deep skirt provides superior moisture resistance to protect connections.Expanding, live-action square-wire spring for fast, secure and long-lasting connections. ![]() Easy to apply, pre-filled twist-on wire connectors.UL Listed to 486G Sealed Twist-On Wire Connector for use in damp/wet locations or above-grade applications. ![]() 100% Silicone-based sealant protects against moisture and corrosion. ![]()
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