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Bulb Bases and Sockets Explained
Light Bulb Base and Socket Shape Types
Lamp Number of Pin or Contacts
"E" or Edison base types, sizes and names
The "G" base type of lamp and light bulb is used to designate a "pinned" base. This can include several pin types and different numbers of pins.
Designation is by letter(s)-numbers-optional letter: The first letters include "G" followed by an optional U, X, Y or Z. Next is a number that designates the number of millimeters between the center of each pin. Finally the optional final letter designates the number of pins, no letter implies 2 pins as does a d for double. Pin number designations include: s : Single, d : Double, t : Triple for 3 pins and q : Quadruple for 4 pins.
Examples include: GU10 base type, G24q base type, or for T8 tubes G13 bi-pin.
EagleLight uses the designation of K to indicate that a cable is the power connection for a lamp. This designation is EagleLight product specific. So where you see a K used in a base type location in a part number. You can assume that the product is a wired connection to power.
Keywords for the information:LED lighting