• American National Standards Institute (ANSI)
• The Construction Specifications Institute (CSI)
• International Electrotechnical Commission (IEC)
• International Organization for Standardization (ISO)

Equipment Standards

• Electric Generating Systems Association (EGSA)
• Illuminating Engineering Society of North America (IESNA)
• National Electrical Contractors Association (NECA)
• National Electrical Manufacturers Association (NEMA)
• National Electrical Manufacturers Representatives Association (NEMRA)
• Underwriters Laboratory (UL)

Safety Standards

• American Society of Safety Engineers (ASSE)
• Occupational Safety and Health Administration (OSHA)

Testing Standards

• American Society for Testing and Materials (ASTM)
• International Electrical Testing Association (NETA)

Other excellent Standards Resources

• Specifications On-Line
• GlobalSpec.com - Guide form specifications for many different types of devices