6. Cable Types and Selection Criteria 6. CABLE Anixter
6.2 CONSTRUCTION AND BUILDING WIRE. Construction and building wireencompasses a wide variety of 300 and 600 volt wire and cable including UL Types THW, THW 2, THWN, THWN 2, THHN, TFFN, TFN, RHH, RHW, RHW 2, USE, USE 2, thermostat wire, SER, SE U, XHHW, XHHW 2 and others.