Light bulbs come in a variety of shapes and sizes as well as wattage amounts. Light bulbs can be categorized by the shape of their bases (the part of the bulb that screws into a light socket), and the letter E before a number indicates the bulb's base type. E12 designates a particular type of light bulb base designed for specific types of lighting.
Light Bulb Bases
According to Harrington Lights, there are seven types of light bulb bases: E10, E11, E12, E14, E17, E26 and E39. Each base size fits a specific light socket or style of lighting fixture. E12 light bulbs are generally known as candelabra light bulbs.
An E12 bulb's base is 12 millimeter in diameter and, as such, will only fit light sockets that are the same size. The average bulb is quite short at just under two inches in height. The typical bulb is identifiable by its unique teardrop shape, bulging out slightly in the center before narrowing at the tip.
E12 Bulb Uses
E12 light bulbs are commonly used with hanging chandeliers and small night lights. They can also be found in electric candles. E12 bulbs can be used in any lighting appliance that has a matching 12 millimeter diameter socket.
E12 Bulb Anatomy
E12 incandescent light bulbs contain a delicate tungsten-based wire in the center that, when heated by electrical current, produces light. The glass of the bulb seals out air infiltration which would cause the filament to burn out prematurely.
The E12 bulb will only fit into a candelabra-size socket. The bulb must be rotated carefully into its base; forcing the bulb into place can damage the bulb or light fixture, and may even lead to injury or fire. Bulbs can become hot to the touch very quickly, so it is important to allow the bulb to cool down before touching or replacing a light bulb.
- Photo Credit Fodor90/iStock/Getty Images
What Is a 15 Watt Type B Bulb?
Light bulbs are made in a wide range of sizes and shapes. A standardized system of letters and numbers is used to...
What Is a Candelabra Base Bulb?
The candelabra base bulb, also known as the candle or torpedo bulb because of its shape, is made for an E12 or...
What Is a GU10 Bulb?
Bayonet mount refers to a fastening mechanism that consists of slots and pins that interlock. GU10 is a type of bayonet mount...
What Is an E26 Lightbulb Socket?
Screw base lightbulbs such as the E26 were introduced by Edison and became widely adopted in the early 20th century. Currently, they...
How to Remove a Broken Light Bulb Base From a Socket
Whether the bulb was broken accidentally and needs to be replaced or it broke when you were trying to replace it, getting...
How Do I Repair a Light Fixture Candelabra Socket ZE304?
A candelabra is a ceiling fixture with multiple light bulbs that is controlled from a wall switch with direct wiring to each...
How to Determine Light Bulb Base Type
Light bulb bases come in several different types. It is important to determine if the type you intend to purchase matches the...
Types of Halogen Lamps
For superior light output, halogen bulbs outperform their incandescent counterparts. Depending upon their intended use, halogen bulbs are available in a wide...
Types of Light Bulb Sockets
Light bulb sockets are an essential part of everyday life, and most people enjoy their benefits without giving them any thought. The...
Difference Between C7 & C9 Lights
Christmas tree lights come in a variety of sizes, types and colors including C7 and C9 and miniature lights. C7 and C9...
What are Asexual Reproduction Bulbs?
Asexual reproduction bulbs are plant bulbs that clone a piece of their genetics to produce another plant, instead of needing to be...