14 Gauge Solid Core Polyethylene Insulated Construction Quality Multi-Purpose Wire - 500 Feet Superior to THHN Wire While Offering the Same Functional Uses (Plus More) Used in Construction, Low Level Electrical Uses, Many Tracer Wire/Locating Wire Direct Bury Purposes Highly Temperature and Weather Resistant in Both Above Ground and Under Ground Installations Available in Spools Up to 3000 Continuous Feet Long SINGLE CONDUCTOR Solid Copper Core Wire - Manufactured in the U.S.A.