Which organization has standardized the configuration of receptacle contacts?

The National Electrical Manufacturers Association (NEMA) is the correct answer as it is responsible for developing standards and guidelines related to electrical products and equipment, including the configuration and specification of receptacle contacts. NEMA standards help ensure consistency and compatibility in electrical components, which is essential for both safety and interoperability in electrical systems.

While other organizations play significant roles in establishing various standards, NEMA specifically focuses on receptacle design and configurations within the electrical manufacturing industry. This makes its standards particularly relevant for anyone working with electrical systems and devices in various applications.

The American National Standards Institute (ANSI) facilitates the development of voluntary consensus standards for products, services, processes, and personnel in the U.S. but does not specifically focus on receptacle configurations. The International Electrotechnical Commission (IEC) is an international standards organization that develops and publishes international standards for all electrical, electronic, and related technologies, but its scope is broader than NEMA’s focus on receptacles. Underwriters Laboratories (UL) is known for its safety certification of products and the development of safety standards but is not specifically tasked with standardizing receptacle contacts.