SOUTHWIRE COMPANY LL 12/2NM-WGX1000 12/2 Non-Metallic Sheathed Cable with Ground, 1000&#39;,SOUTHWIRE COMPANY LL,12/2NM-WGX1000" /> Type NM-B cable is designed specifically for use in residential and commercial wiring of branch circuits Installation above ground and in dry locations only Approved for service to 600 volts