2007 National Electrical Safety Code NESC C2-2007

National Electrical Safety Code NESC C2-2007 is used throughout the United States and in more than 100 countries, and complements NFPA 70: National Electrical Code (NEC) with practical guidance on how to safeguard employees and the public throughout every aspect of electrical supply and communication lines design, installation, operation and maintenance.

National Electrical Safety Code NESC covers basic provisions for safeguarding of persons from hazards arising from the installation, operation, or maintenance of (i) conductors and equipment in electric supply stations and (ii) overhead and underground electric supply and communication lines. It also includes work rules for the construction, maintenance, and operation of electric supply and communication lines and equipment. The standard is applicable to the systems and equipment operated by utilities, or similar systems and equipment, of an industrial establishment or complex under the control of qualified persons.

Changes in the 2007 NESC include changes to rules involving:

• Metal grounding poles
• Starting voltages and clearances
• Grounding and insulation for guy wires
• Arc exposure analysis
• Clearances between transmission lines
• Multiplex cable attachment to neutral brackets
• Loading due to freezing rain and wind
• Fiber-reinforced polymer elements
• Worker loads
• Equipment bonding
• Antenna radiation exposure limits.