What Are Blue Wire Nuts? Blue wire nuts, also recognized as twist-on wire connectors, are essential for creating secure electrical connections. They are particularly designed to fasten two or more low-voltage electrical conductors together. Their widespread use in North America is a testament to their reliability and ease of use. Blue wire nuts are distinct in their color and size, m... https://www.cabletiesunlimited.com/blogs/learn/blue-wire-nuts-the-simple-solution-for-electrical-connections?_pos=39&_sid=e68646666&_ss=r