General Cable's copper building wire consists of Types XHHW-2, THHN/THWN-2, and 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 U.S. and delivers long-term, reliable performance in many types of building applications. THHN/THWN-2 High Speed (HS) Copper Cable General Cable THHN/THWN-2 HS (High Speed) cable is a versatile solution for most general wiring applications. XHHW-2 HS High Speed (HS) Copper Cable General Cable XHHW-2 HS (High Speed) cable is intended for general purpose wiring in residential, commercial and industrial construction. TFFN High Speed (HS) Cable General Cable TFFN HS (High Speed) cable is a full color, single conductor copper cable that is used as fixture wire, machine tool wiring, or appliance wiring. RW90/RWU90 Copper Cable Our RW90 cable is suited for 600 volt above ground wiring, while our RWU90 cable provides a reliable solution for service entrance below ground applications. T90 High Speed (HS) Copper Cable General Cable T90 HS (High Speed) cable is a full color, single conductor copper cable featuring a tough and resistant polyvinyl chloride insulation for use as exposed or concealed wiring in dry or damp locations.