The term 'nominal voltage' refers to what?

Nominal voltage is a term used to describe the standard or expected operating voltage of an electrical system. It serves as a reference point for equipment and systems during planning and design. When discussing nominal voltage, it reflects the voltage level that is typically supplied and expected to be present under normal operating conditions, rather than the maximum or minimum possible voltages that could occur due to variations in the supply. Additionally, nominal voltage allows for some degree of fluctuation, recognizing that actual operating voltages may vary slightly due to load conditions and other factors. This standardization aids in ensuring compatibility and safety in electrical systems.