Cerrowire®, a Marmon/Berkshire Hathaway company, is a leading U.S. manufacturer of copper building wire for residential, commercial and industrial applications.

Industry-leading innovations from Cerrowire give our customers the competitive edge. From our newly formulated slip technology for the CerroMax™ NM and THHN product families to the ReelRover™ – a game-changing wire handling device – we deliver innovative and practical solutions that improve your installation process.