Which of the following is NOT classified as a device in electrical terms?

In electrical terminology, a "device" typically refers to an apparatus designed to perform a specific function related to the operation of an electrical system. Dimmer switches control the brightness of lights, receptacles provide power outlets for electrical devices, and switches enable the on/off operation of circuits.

In contrast, a lamp, while essential for providing illumination, is classified as a load rather than a device. Loads consume electrical energy and convert it into another form of energy, such as light or heat. Therefore, the lamp does not perform an operational function in the way that the other options do within an electrical system. Thus, it fits the definition of a load, making it the correct response to the question regarding which item is NOT classified as a device.