Are circuits of 30A permitted to serve fixed lighting units with heavy-duty lamp holders in non-dwelling units?

Circuits rated at 30A can indeed be used to serve fixed lighting units with heavy-duty lamp holders in non-dwelling units. Non-dwelling units, such as commercial or industrial spaces, typically have different regulatory standards than residential spaces. The higher amperage is designed for applications that may require more robust electrical components, allowing for more significant loads and varying types of fixtures.

In these non-dwelling environments, where heavy-duty fixtures may be necessary due to the nature of the work or tasks performed, utilizing a 30A circuit is permissible. Such circuits can handle larger loads, ensuring that the lighting systems can operate effectively without the risks of overload that might be more significant in a residential setting. As long as the installation follows the appropriate codes and is safely implemented, these types of circuits can support such configurations.