The NEMA or industry standard symbol for a momentary-contact, single-circuit, normally closed, double-break pushbutton switch is shown at which location?

The correct answer relates to the specific designations used for pushbutton switches in the National Electrical Manufacturers Association (NEMA) standards. The symbol for a momentary-contact, single-circuit, normally closed, double-break pushbutton switch is distinct in its representation and is typically found in specific locations as laid out in NEMA documentation.

In this case, Location III is where the symbol for this type of switch is standardized. This location is recognized specifically for its illustration of a normally closed configuration, emphasizing how the switch operates when not engaged. The clarity of symbols at this location helps electricians quickly identify the type of switch being referenced, ensuring accurate installation and application in electrical systems.

Understanding where to find these symbols is essential for proper adherence to electrical standards and for ensuring safety and functionality in electrical installations. The use of the correct symbol aids in communication among electrical professionals and ensures that everyone works with the same understanding of component capabilities and characteristics.