David Brender, P.E., is National Program Manager, Copper Development Association, CDA. He has more than 20 years of experience in electrical wiring applications. He is also a principal member of Panel 5 of the National Electrical Code, a senior member of the Institute of Electrical and Electronics Engineers (IEEE), and a life member of the Association of Energy Engineers. For more information, please visit www.copper.org. Copper Development Association (CDA) offers free or low cost seminars and presentations on this and other subjects to contractors, inspectors, engineers, and other groups. For more information, please visit www.copper.org/electricalseminars.