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April 18, 2011

What's New in the 2011 National Electrical Code®

Adopted in all 50 states, NFPA 70®: National Electrical Code provides comprehensive requirements for electrical wiring and equipment. A new, 2011 edition of the Code is now available. Major changes in the 2011 NEC address alternate energy, green technologies and IT equipment:
  • New Article 694 has first-time requirements for small wind electric systems.
  • Revised Article 625 includes updates on safe battery charging for plug-in hybrid vehicles that reduce the risk of explosion.
  • Revised Article 705 covers interconnecting generators, windmills, and solar and fuel cells with other power supplies.
  • New Article 840 addresses the increased demand for broadband communications systems with requirements for wireless, routers, and wireless disconnects.
New requirements focused on workplace safety include:
  • Means to reduce incident energy (240.87)
  • Labeling at subpanels to identify feeder supply source (408.4(B))
  • Disconnecting means for transformers (450.14)
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