NALMCO Certified Apprentice Lighting Technician (CALT) Practice Exam

Which of the following is NOT a type of fluorescent lamp base?

1. Bi-pin

2. Recessed double-contact

3. Single-pin

4. 8-pin

The correct answer is: 8-pin

The 8-pin base is indeed not a type of fluorescent lamp base. In the context of fluorescent lamps, common bases include the bi-pin, recessed double-contact, and single-pin types. Each of these designs connects unique lamp configurations to fixtures, facilitating proper electrical connections and efficient performance in lighting applications. The bi-pin base typically features two pins that fit into the socket, often used in compact fluorescent lamps and linear fluorescent tubes. The recessed double-contact base is characterized by its two sets of pins that allow for more secure connections, commonly found in larger fluorescent tubes. The single-pin base generally has one pin at each end and is typically used for specific types of fluorescent lamps. Each of these bases is integral to ensuring that the lamp operates effectively within the electrical system. In contrast, an 8-pin base does not align with the conventional categories of fluorescent lamp bases and is primarily associated with certain compact fluorescent lamps or specific configurations rather than standard fluorescent tube applications. Thus, identifying the 8-pin base as not a type of fluorescent lamp base is accurate within this context.