Southwire Romex SIMpull NM-B Cable – 12 GA 3-Conductor, 50 ft, Purple

Overview

Southwire Romex SIMpull NM-B copper cable is designed for general wiring in homes, stores, and shops. The SIMpull jacket and copper conductors support straightforward pulling, stripping, and installation in normally dry spaces at temperatures not to exceed 90 °C, with ampacity aligned to 60 °C conductors as specified in the 2011 National Electrical Code.

NM-B copper building wire is commonly used for residential branch circuits powering outlets, switches, and other loads. It can be routed through air voids in masonry block or tile walls when those walls are dry and not damp, and carries a voltage rating of 600 V.

Key benefits for installers

• The patented SIMpull jacket reduces resistance during pulling and simplifies stripping, saving time on site
• Copper NM-B wire is a standard choice for residential branch circuits in dry locations
• Designed for above-ground use in dry spaces with a 600 V rating, providing a margin of safety
• Suitable for running through air voids in dry masonry walls, aiding clean routing

Installation tips and considerations

• Install above ground and in normally dry locations to maintain performance and safety
• Follow local electrical codes and ensure ampacity aligns with conductor temperature ratings
• Plan routing for outlets and switches along branch circuits
• In masonry walls, use only in air voids that are dry and free of moisture

The purple jacket helps quick identification on a crowded job site, and the cable’s general use aligns with common residential wiring tasks. Always consult the current code requirements and a licensed electrician for complex layouts.