Which symbol represents a SPDT single-break switch in the NEMA or industry standard?

The symbol that represents a SPDT (Single Pole Double Throw) switch in the NEMA or industry standard is found in Location I. This type of switch is commonly used to control a single device from two different locations. Understanding the context of NEMA symbols is crucial for anyone working in the electrical field, as these symbols provide a standardized way to represent different types of electrical components and their functions.

In this case, Location I is specifically designated for the representation of the SPDT single-break switch. It helps electricians and engineers to quickly identify and properly integrate the switch into electrical system designs. Familiarity with these symbols ensures clarity in communication and enhances safety in electrical installations.

The other locations referenced in the options signify different types of electrical components or configurations, making it essential to recognize the specific characteristics associated with each. By identifying Location I as the correct representation for a SPDT switch, it emphasizes how standardization in symbols contributes to effective electrical design and implementation.