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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