A horn is shown at ___ in Figure 320.11 as a NEMA or industry standard symbol.

The positioning of the horn symbol at II in Figure 320.11 aligns with the NEMA (National Electrical Manufacturers Association) standards for electrical symbols. NEMA develops standards that provide guidance and clarity in electrical design and installation processes. This specific placement indicates its standardized representation and is recognized by professionals in the field for uniformity in electrical diagrams and schematics.

Understanding the context of where horn symbols are placed is important for communication among electricians, engineers, and technicians. Recognizing these symbols in standardized figures helps in the effective interpretation and execution of electrical plans. Each symbol corresponding to a specific placement is critical for ensuring that everyone in the field understands the components and their functions the same way.