Base Light Bulb Socket Types

Harbor breeze off white lamp socket.

Base light bulb socket types.

Light bulb socket sizes chart. For t5 bulbs fluorescent and led. Historically known as the old christmas light bulb size. Medium e26 bulbs e27 in europe.

Sockets for instant start ballasts are also known as shunted. Find the light bulb base type you re looking for with this visual chart detailed illustrations of general bases fluorescent bases and specialty halogen base types. These sockets have a designation code that starts with an e for edison and a number which represents the diameter in millimeters of the light bulb base that fits into it. For example an e26 socket is designed for use with an e26 based light bulb.

C9 e17 intermediate base bulbs. Named after thomas edison the edison screw socket is the most common and easily recognizable socket type. C7 e12 candelabra base bulbs. These sockets work with tubular fluorescent or led bulbs.

The same size as a standard household bulb. Sockets for rapid and preheat ballasts are also known as non shunted. In some older light bulb catalogs bases are referred to as caps e11 miniature candelabra e26 medium screw e39 mogul screw ex39 mogul exclusionary ba15d double contact bayonet ba15s single contact bayonet fa8. Here is the light bulb socket size chart to help you determine what size do you need your light bulb to be.

You can compare most common e size designations with a thread diameter see the specific light bulb name for that size see what are the most common applications and even see the official standard for light bulbs. Replace worn sockets in light fixtures.