General Cable's copper building wire consists of types XHHW-2, THHN/THWN-2, TFFN along with Canadian constructions such as RW90, RWU90 and T90 that come in a variety of colors and feature the high speed, extra low friction jacket designed to improve installation even under the most difficult conditions. Our high-quality copper building wire is manufactured in the US and delivers long term, reliable performance in many types of building applications.