What defines a "lampholder" in the context of the NEC?

In the context of the National Electrical Code (NEC), a "lampholder" is defined primarily as an electrical component that connects with a lamp. This definition captures the essence of what a lampholder does — it serves as the interface where the lamp, typically a bulb, is physically and electrically connected to the power source. The lampholder provides the necessary electrical connections to power the lamp while also often incorporating safety features like insulators to prevent electrical shock and short circuits.

A lampholder is not merely a mount for a light bulb, as it plays a more critical role in providing the electrical connectivity needed for the lamp to function. While it helps to hold the lamp in place, its primary function is electrical in nature.

The lampholder is distinct from components that act as a power source for multiple fixtures or those designed exclusively as protective casings. Instead, it is a single, specific component that facilitates the operation of the lamp through connection and secure mounting, highlighting its importance in lighting design and application as per NEC guidelines.