National Electrical Code 2011 (Nfpa 70) by the National Fire Protection Association provides a comprehensive guide to safe, efficient, code-compliant electrical installations. This widely used resource combines solid, thorough research-based content with essential tools for building an in-depth understanding of critical topics. New to this edition are articles such as first-time Article 399 on Outdoor, Overhead Conductors with over 600 volts, first-time Article 694 on Small Wind Electric Systems, and first-time Article 840 on Premises Powered Broadband Communications Systems. Essential for those in or entering careers in electrical design, installation, inspection, and safety, this code is adopted in all 50 states.