The term refers to a specific type of light bulb characterized by its G9 bi-pin base and a maximum power consumption of 25 watts. The “G9” indicates the physical connector, featuring two pins spaced 9 millimeters apart, designed for easy push-fit installation. The “25 watt” specifies the uppermost limit of electrical power the bulb will draw during operation; exceeding this wattage may damage the fixture or bulb itself. As an example, a compact halogen or LED bulb used in chandeliers or desk lamps may conform to these specifications.
This type of bulb is commonly selected due to its compact size and energy efficiency, particularly in its LED iterations. The limited wattage promotes reduced energy consumption, potentially lowering electricity bills and minimizing environmental impact compared to higher-wattage options. Historically, halogen bulbs with this base and power rating were prevalent, but advancements in LED technology have led to more efficient and longer-lasting replacements that meet the same specifications.
